For several years now we have compiled a combined list of all birds recorded in the Channel Islands thanks to the recorders from Jersey, Guernsey, Alderney and Sark. Each year we’ve seen the lists grow longer and the order the species are listed in keep changing. Today we launch the updated list, updated to the end of 2017 (the Islands don’t review any year’s birds until after the next one starts). Download the list here.
The updated list includes four (well, five) new species, three of which, excitingly, were recorded on two islands each: marsh sandpiper (Alderney and Jersey), (American) royal tern (Guernsey and Alderney) and Iberian chiffchaff (Alderney and Jersey). In fact, the royal tern became quite a celebrity in Guernsey, Alderney and even in Sussex. The tern went just about everywhere. Except Jersey that is. Editor’s note its been around in 2018. And still not been to Jersey!
The other obvious feature for regular readers of this or any other bird list is the changes to the order, relationships and even the birds’ scientific names. Many of us grew up with long held understanding of the order we put the birds in (start with divers and end with crows) and how they were related (divers and grebes, herons and storks). However, new technologies have made it much easier to look closely at every species and get a much better idea of who’s who and where they sit in the order. Wildfowl are first, and not just because they’re very cool but because they and the gamebirds are not that closely related to every other bird. And hawks and falcons aren’t related? No, and strangely that split should have been obvious before.
The list actually includes one, or two, other new species. That goose formerly known as the bean goose has become two species: taiga bean goose and tundra bean goose. Luckily for the list compilers, the Islands’ ornithologists had in recent years recorded which of the two bean geese, then considered the lower rank of subspecies, were being seen. The split, and upgrade to full species status, wasn’t hard to fit in. If everything was always so easy. Our other new bird was a Caspian gull. This eastern version of the herring gull was once considered just herring gull until analysis found that it was quite distinct. Only unlike the geese it doesn’t always look distinct and takes a real enthusiast to pick one out of the flock. Luckily this one’s finder and photographer not only knows his gulls but got a little assist in that it was ringed!
And the totals? Well, overall we’ve recorded 376 species with Jersey still edging in front with 335. So enjoy the new list, tick off your sightings and try to fill the gaps in each Island’s list. And play ‘what will be Alderney’s 300th species’ (I’m going with little bunting). Why not check out the gaps in the list and try to fill them (we’d recommend seawatching in Sark first). But remember, if you visit the islands please send in your records to the relevant recorder – they’re all there on the list.
A Working List of the Birds of the Channel Islands (updated to December 2017) can be downloaded here
A two-month old chough chick exploring Grosnez headland. Photo by Mick Dryden.
By Liz Corry
Jersey now has 46 choughs flying free thanks to a brilliant breeding season and release efforts by Jersey Zoo staff. Details of how that came to be this month are explained below.
Who’s the daddy?
Determined to crack the mystery over the wild chick lineage, we began catching birds to fit leg rings. It took a couple of weeks and help from Ian Buxton and Cristina Sellarés (licensed bird ringers). By the end of July we had nine chicks fitted with leg rings and no birds left unringed. A total of nine birds.
Tarsus length being measured on a wild-hatched chick. This can be an indicator for sex. Photo by Elin Cunningham.
Plastic leg rings on a wild-hatched chough to identify individual (pink) and year of hatch (green). Photo by Elin Cunningham.
What we are not clear on, and may never know, is whether we had ten or eleven chicks at one stage. On 4th July Q and Flieur were seen feeding two unringed chicks. When we checked their nest on 16th June it was empty. Judging by the age of the chicks at the aviary they could not have fledged before the 16th. Did Q and Flieur nest elsewhere? Are they responsible for the mystery nest we found in the quarry?
Trevor and Noir were also seen feeding one or two unringed chicks at the start of July. Are they responsible for the mystery nest? Are these chicks in addition to Q and Flieur’s?
Noirmont feeding an unringed chick with partner Trevor looking on. Photo by Liz Corry.
We knew for certain Lee and Caûvette had two chicks and were happily taking them to Grosnez each day. Kevin and Bean had fledged three chicks. Yet, by the start of July, they were clearly only feeding two unringed chicks. Had one of the other pairs adopted the third chick over the course of the feeding frenzies at the aviary?
Lee feeding one of his two chicks at Grosnez. Photo by Mick Dryden.
By the time we had fitted all the leg rings, Trevor and Noir had stopped feeding a chick(s). Was this because they had died or because they never had them in the first place? The blood samples we send off only inform us about gender. There is a lot more involved to test for lineage.
For now, all that matters is that we have nine chicks being fed and nurtured out at Sorel. The wild chicks are named according to their leg rings until we can think of better names.
Dusty & Chickay
Red
White
Blue
Kevin & Bean
Green
Orange
Lee & Caûvette
Yellow
Black
Q & Flieur
Mauve
Pink
You can already see a difference in the chicks as they get older. Bill colour is changing. More importantly they are picking up crucial skills from the adults, whether parents or not. We have seen them drinking from the water tray and lifting the broken slate enrichment area in the aviary looking for insects.
A recently fledged chick chilling with the flock at Sorel back in June. Photo by Liz Corry.
Chough chicks can be very forceful with their begging. Photo by Liz Corry.
Mega-beast: Dusty feeding one of his chicks. Photo by Liz Corry.
Dusty regretting parenthood? Photo by Liz Corry.
An unringed chick begging at Yarila (non-breeding bird) eventually pushing her off the stand. Photo by Liz Corry.
Dusty feeding one of his chicks whilst Chickay (mum) goes about her business. Photo by Liz Corry.
Chickay pretending not to see or hear her chick. Photo by Liz Corry.
Star wars saga
The three males – Han Solo, Skywalker, and Chewy – held in the aviary for a month have been officially released.
Release day saw 45 choughs turn up to wish the newbies well or steal their food. 50:50 really. Photo by Liz Corry.
Skywalker’s brief adventure outside in June meant it came as no surprise to see him leave first. Albeit to the roof of the aviary where he sat preening Zennor.
Skywalker’s (on the left) first hour of freedom spent with his new love of his life, Zennor. Photo by Liz Corry.
Han Solo and Chewy were not as quick to venture outside; once they did they appeared at ease, making friends with the free-living group. Although less at ease with the wild chicks who had decided to test the newbies’ untapped parenting skills by begging in their faces.
An unringed chick following Skywalker around in the misguided hope of free food. Photo by Liz Corry.
After a few days Han stopped showing up at the feeds. Since group attendance rate was around 80-90% it was hard to know if he was in trouble or not. He made a reappearance four days later and looked to be fine, feeding happily with the group.
The next disappearing act was after 5th July. This time he failed to reappear. There was a sighting on the 28th at the aviary. Although chances are the leg rings were misread for Caûvette’s (his year-colour is black, hers is dark blue).
As he was showing no obvious signs of ill health, a possible theory behind his disappearance is lack of food. If he struggled to find food in the wild (whether due to lack of foraging skills or the foreboding heat) and wasn’t making it to the supplemental feed, he could have easily starved. If he was made weaker by the lack of food, he would become increasingly susceptible to peregrine attacks.
In fact, on one of the post-release roost checks, only one chough could be seen at Sorel as the sun set. The presence of a peregrine perched on the adjacent cliff face may account for the absence of the other choughs.
Peregrine perched below an unused chough nest box on the cliffs at Sorel. Photo by Liz Corry.
Theories aside, we have had to conclude that Han Solo is presumed missing at this stage. Gone to a galaxy far, far away.
Heatwave
Jersey’s north coast is being hit hard by the summer heatwave. The coastal grassland has lost its lush green colour and the sheep have temporarily vacated; there just isn’t enough vegetation for them. The choughs have been fairing ok; the supplemental food compensates for the rock-hard ground.
The release site back in May before the heatwave. Photo by Liz Corry.
The release site in July feeling the effect of the heatwave. Photo by Liz Corry.
The biggest concern for them (and us) is water. The stream in Mourier Valley is currently hidden by bracken and fresh water sources in the quarry depleted. With an absolute drought declared on the Island we were concerned the choughs would turn to hazardous water troughs. Horse troughs in particular tend to be designed with smooth steep sides. A bird or small mammal can’t climb out if they fall in whilst drinking.
The stream in Mourier Valley runs almost parallel to the footpath – not that you can see it for the bracken. Photo by Liz Corry.
We always provide drinking water for the choughs in the aviary. However, the water butt dried up in back in June. Cleaning duties have been reduced to a minimum and fresh water is carried up each day for the choughs. In mid-July we had help from a few Durrell staff to get extra containers up to Sorel. Two days later it rained!
The rain didn’t last long though. We are back to rationing water until the heatwave breaks.
Insect shortages
In addition to water shortages, we have been struggling with commercial insect supplies. The company who supply the Zoo with livefood ran out of mealworms – a natural glitch in the breeding process.
When they have managed to supply mealworms, the hot weather has led to the insects over-heating in the packaging they are sent in. Trust me the smell of dead and/or dying mealworms is not a pleasant one.
Rather than a photo of dead mealworms, here is a sheep instead! Photo by Liz Corry.
The alternative of dried mealworms has not worked in the past for birds in the Zoo. They refuse point blank, some writing an angry worded tweet to the CEO. Out of desperation, we gave them a try at Sorel along with suet pellet (made with insect protein). The pressures of begging chicks and lack of wild food meant the adults had no reservations over taking the dry food.
We are still struggling with insect supplies although the order of Remiline pellet finally arrived at the end of July. Swings and roundabouts.
ReWild the People
ReWild the People circular walk from Devil’s Hole held on the 15th July. Photo by Dave Evans.
As part of Jess Pinel’s fundraising challenge of 31 activities in 31 days we hosted a circular walk from Devil’s Hole to Sorel. This was a free event open to all. Whilst taking in the sea air we discussed the Birds On The Edge project and the benefits to the public.
Aaron le Couteur, shepherd, explaining how sheep help to restore Jersey’s coastal habitats. Photo by Dave Evans.
Aaron le Couteur, the shepherd, gave a very informative talk and the choughs showed up for a bonus feed. The event was enjoyed by all and hopefully gained a few new fans to spread the word across the Island. More information about the other activities undertaken can be found here.
Choughs getting a bonus feed for the Rewild the People walk. Photo by Dave Evans.
Lights, camera, action
The choughs took part in two media projects this month. They are clearly getting used to the cameras as they were not phased by the go-pros at the feed. We hope to share some of the footage soon.
Filming the choughs at Sorel. Photo by Liz Corry.
Both filming projects will be detailed further very soon so watch this space!
The choughs have been busy ‘behind the scenes’ resulting in a record-breaking breeding season. By the end of June, we had found four active nests with a total of ten chicks. We knew four chicks had hatched at the end of May. We didn’t have to wait long before Ronez Quarry sent photos of a second nest with chicks.
Dusty and Chickay’s nest with three chicks safely tucked away in a quarry building. Photo taken under license by Toby Cabaret.
This nest belonged to Dusty and his partner Chickay: an astonishing and heart-warming sight. This was their third season nesting, finally they had chicks, and from the looks of things they were at least three weeks old.
The icing on the cake is the uniqueness of the coupling. Chickay was hand-reared, proving that our choice of methods worked, and Dusty is himself a wild-hatched chick.
Ronez hired equipment to access the chough nests under license. Photo by Liz Corry.
A site-visit was arranged for 16th June when the quarry was not in operation. Ronez hired a cherry picker to access the nests. What we found was a mixed bag of good news and bad news. Some nests had failed, some succeeded beyond expectations. And then one complete surprise; a nest we had no idea about.
This nest contained one chick approximately four weeks old. We also noticed twigs in a nest-box we had put up in 2014. This is the first time the birds have tried to use this box. Either they decided it wasn’t a suitable place to continue or the pairing just didn’t work out.
The table below aims to answer any queries the dedicated reader has about which pairs succeeded.
Pair
Bred before?
Nest status
Green & Black
Yes
empty
Dingle & Red
Yes
empty
Kevin & Bean
Yes
3 chicks
Dusty & Chickay
No
3 chicks
Q & Flieur
Yes
empty
Lee & Caûvette
Yes
2 chicks
White & Mauve
Yes
empty
Trevor & Noirmont
No
no nest found
Pyrrho & Percy
No
empty
? & ?
–
1 chick
Total
9 chicks
However it also throws up a few queries, like “didn’t Kevin and Bean have four chicks in May”? Yes they did. Sadly one is no more, probably the runt of the clutch, but to have three chicks still alive and well is a first for Jersey’s choughs.
The nest belonging to Lee and Caûvette was found to contain two chicks. Photo by Liz Corry.
You might also be tempted to ask “does the mystery chick not belong to Trevor and Noir“? That, dear reader, is something I still don’t have the answer to a month after the site visit. And one that is driving me insane so lets return to June 16th; life was simpler then.
We had taken a licensed ringer into the quarry with us so we could ring the chicks and get DNA samples for sexing. This is supposed to be done when the chick is around three weeks of age. Clearly from what we were seeing these chicks were older. We did not want to risk disturbing them for fear they prematurely left the nest once we put them back. It is a long way to fall!
That is ok, we thought, we can just ring them once they reach the aviary. We can see which adults feed them and work out ownership that way.
How naive we were.
Fledged chough chicks reach the aviary
Below is a montage of footage taken during the supplemental feed once the chicks had fledged. Imagine having a baby that can fly and walk and scream for food whilst doing said actions. Then multiply by two or three. That is what it’s like for a chough parent for the first few months. Note how loud the begging starts off then trails away. Always lingering, never stopping.
From appearances, Chickay was not keen on parenthood. She left most of the feeding duties to Dusty. One of our daily reports records an observation of Kevin “karate kicking” a chick in response to the constant in-your-face begging. Quite often at the feeds you would see chicks accidentally push the parent off the food-stand or shelf in the frenzy to beat its sibling to the food on offer. You also saw them beg at non-breeding individuals who looked more than a little perplexed by the situation.
Throughout all this, the three newbies (Han Solo, Chewy, and Skywalker) remained locked in quarantine in one half of the aviary. We could not attempt to catch-up and ring the wild chicks until the three had been released. That was scheduled for July.
All we could do in the meantime was try and figure out how many chicks each set of parents had. Lee and Caûvette made things easy as they continued to visit Les Landes and Grosnez, taking their chicks away from the mayhem for a few hours each day. We knew both of their chicks seen on the 16th had survived and arrived at the aviary the last week of June.
Family portrait: Lee and Caûvette with their two chicks at Grosnez. Photo by Mick Dryden.
Lee with his two noisy chicks. Photo by Mick Dryden.
Dusty and Chickay were tending to three chicks (well Dusty was at least). They would take them back and forth between Sorel and the south-east corner of the quarry. Initially there was concern over one of the three chicks as it looked relatively lethargic. We put this down to the heat and that it could be the youngest, struggling to keep up. Dusty was always very sensible, taking his chicks into the shade to rest.
Dusty and Chickay keeping their chicks in the shaded parts of the quarry. Note the chick lying down next to dad whilst the other two preen next to mum. Photo by Liz Corry.
Kevin and Bean‘s three also made it from nest site to Sorel. However, they made it a little harder. Most of the time their chicks were kept around Sorel Point. Often out of sight, but not earshot.
View across the quarry from Sorel Point. Photo by Liz Corry.
Then the mystery deepened. Q and Flieur turned up to the supplemental feed with two chicks. “But their nest was empty?” you cry. Yes, yes it was. “And the surprise nest only had one chick in it?” you answer back. Yes, yes it did.
The Plémont pair
Earl and foster-reared Xaviour, or the Plémont pair as we call them, are still roosting out at Petit Plémont. Their amazing choice of nest site has made it impossible to tell exactly what they have been up to this breeding season. We did suspect, from the couple’s behaviour out of the nest, that the female was incubating eggs.
Earl taking a break on the WW2 bunker ruins at Petit Plémont. Photo by Liz Corry.
One was seen carrying something white away from the nest. An optimistic observer thought it was a faecal sac. These ‘sacs’ are produced by chicks and carried away from the nest by the parents. He changed his mind when he saw the adult pecking away at it. The white object started to look more like an egg, but smaller than a chough egg. Out of reach of the observer, we will never know the true-identity of the object.
In the days the followed, hope of a successful nesting attempt began to fade. Xaviour was spending more time away from the nest. Foraging around the headland and neighbouring cliff tops to feed herself rather than take back to an expectant nest.
The pair are young. This year should be taken as a positive step forward in their development. They remain the first pair to set up a territory away from the release site. As they mature they will no doubt see success with their nest.
Star Wars saga continues
Han Solo, Chewy, and Skywalker continue to adjust to life at Sorel whilst in quarantine. Faecal samples from the two Paradise Park birds tested positive for nematodes.
Staff began to hear sneezing from the confined group a week or so after their arrival. Nothing to cause alarm, but enough to warrant a wormer pre-release.
This was scheduled for 20th June. On the 17th the Bird Department received a call to say that there were only two choughs locked in the aviary. Skywalker was missing. Scanning the aviary, it became apparent that he had not used Jedi mind tricks to escape. He had in fact managed to squeeze out through a hole in the netting, no doubt created by rodents.
He was not with the free-living choughs at Sorel. Well not in plain sight at least. The following day he couldn’t be any more obvious if he tried. Skywalker was on the roof of the aviary alongside Zennor a young female.
Since the boys arrived at Sorel, Zennor has shown a keen interest in them. She sits, on the opposite side of the netting during every feed whilst everyone else is tucking into their meal. We thought her interest was in Han Solo as they had touched bills through the netting; fiction becoming reality? Alas, it was Skywalker she wanted which worked to everyone’s advantage as he had another chough to follow, returned to the aviary, and we managed to get him safely back inside.
Return of the Jedi: Skywalker shortly after being trapped back inside the aviary. Photo by Paul Pestana.
All in time for the vet to visit on the 20th, give all three a wormer, and fit Han Solo with a transponder chip just like all the other captive-bred birds have. Bird Department staff also kitted them out with shiny new leg ring combos to make it easy to tell them apart once released.
Luckily the States Vet agreed that no extra time needed to be added to their quarantine period. Once complete, at the end of June, they can be released.
May the force be with them.
Aviary maintenance
Despite the recent rodent-proofing at the release aviary there are still weak points in the defences. As exemplified by Skywalker’s escape. Without a major overhaul of the aviary design there is not much to be done.
Mind you, that overhaul may come sooner than imagined. The shelving has now warped so badly that bolts keeping the hatches closed no longer reach. The hinges on the external keeper door snapped right off due to rust.
This is the first year the pre-release group have not had full access to the flight tunnel in a bid to avoid further premature releases. Once the new boys have been released and settled into life at Sorel we can start repair work.
Supplemental feeds
The choughs have seen a few changes to the menu this month due to food shortages. There is still no Remilline pellet in stock in Jersey, so the egg-based diet returned to the menu. The live-food manufacturer has been experiencing issues with their mealworm stock resulting in fewer or no insects being delivered. Not the best of timing. We had to increase the amount of supplemental food this month in response to an increasing demand. Obviously with mouths to feed, the breeding pairs become more dependent on the aviary feed.
Lights, camera, action
Ronez Quarry very kindly funded young film maker Sam Hertzog to fly to Jersey and produce a short film about the chough reintroduction project. Sam had four days to try and sum up the last five years into a seven minute documentary. To make the challenge that little bit harder we threw in rolling sea fog, a field manager dying of hay fever, and birds that never paid attention to the script.
Sam succeeded. You can view his film below. We are very grateful to his friend Elin Cunningham for proposing the idea and for being the boom operator, gaffer, assistant director, chauffeur….
The speed at which the planet is warming is playing a key role in the decline of bird and mammal species, new research has revealed.
As part of a new study, The Zoological Society of London (ZSL) examined 987 populations from 481 species across the world, investigating how the rate of climate and land-use change simultaneously affects the declines of mammals and birds. The lead reason behind the speed of the population declines studied was the rapidity of a warming climate.
Rapid climate warming has a particularly detrimental result on bird populations, and indeed the observed effects were twice as strong in birds as in mammals. The study also revealed that populations outside of protected areas are more severely impacted, with species such as black-tailed godwit and pink-footed goose some of those highlighted.
Lead author Fiona Spooner explained: “The reason we think birds might be worse off in particular is due to birds’ breeding seasons being particularly sensitive to temperature changes. We think this could be leading to a desynchronisation of their reproduction cycle, leading to the negative impacts we’re seeing. Mammal breeding seasons are a lot more flexible, and this is reflected in the data.”
This finding is particularly stark because, if the rate at which the climate warms exceeds the maximum rate of animals being able to adapt to environmental changes, local extinctions will increase. The study lays out the urgency of understanding the vulnerability of these species to increases in temperature and also offers a projection into a future, in which humans haven’t attempted to mitigate climate change, where animal populations are heavily declined across the world.
Senior co-author Dr Robin Freeman reiterated the need to attempt to curb future warming: “Our research shows that in areas where the rate of climate warming is worse, we see more rapid bird and mammal population declines. Unless we can find ways to reduce future warming, we can expect these declines to be much worse.”
Gareth Redmond-King, Head of Climate and Energy Policy at WWF, commented on how continued climate change could threaten UK wildlife too: “This report provides further evidence of the growing threat that climate change poses to our wildlife, not only around the world but also right here on our doorsteps, such as bees and the much-loved puffin – we urgently need the UK Government to take action to meet current targets to cut greenhouse gas emissions, but also to increase ambition to build a sustainable, climate-resilient future in which we restore nature, not destroy it.”
Read the paper Rapid warming is associated with population decline among terrestrial birds and mammals globally here
Birds around the world eat 400 to 500 million metric tonnes of beetles, flies, ants, moths, aphids, grasshoppers, crickets and other anthropods per year. These numbers have been calculated in a study led by Martin Nyffeler of the University of Basel and published in The Science of Nature, highlights the important role birds play in keeping plant-eating insect populations under control.
Nyffeler and his colleagues based their figures on 103 studies that highlighted the volume of prey that insect-eating birds consume in seven of the world’s major ecological communities known as biomes. According to their estimations, this amounts to between 400 and 500 million tonnes of insects per year but is most likely to be on the lower end of the range. Their calculations are supported by a large number of experimental studies conducted by many different research teams in a variety of habitats in different parts of the world.
“The global population of insectivorous birds annually consumes as much energy as a megacity the size of New York. They get this energy by capturing billions of potentially harmful herbivorous insects and other arthropods,” says Nyffeler.
Forest-dwelling birds consume around 75 per cent of the insects eaten in total by birds which make up about 300 million tonnes of insects per year. About 100 million tonnes are eaten by birds in savanna areas, grasslands and croplands, and those living in the deserts and Arctic tundra. Birds actively hunt insects especially during the breeding season, when they need protein-rich prey to feed to their nestlings.
Further, the researchers estimated that insectivorous birds together only have a biomass of about three million tonnes. Nyffeler says the comparatively low value for the global biomass of wild birds can be partially explained through their very low production efficiency. This means that respiration takes a lot of energy and only leaves about one to two percent to be converted into biomass.
“The estimates presented in this paper emphasize the ecological and economic importance of insectivorous birds in suppressing potentially harmful insect pests on a global scale — especially in forested areas,” explains Nyffeler, who says that this is especially so for tropical, temperate and boreal forest ecosystems.
“Only a few other predator groups such as spiders and entomophagous insects (including in particular predaceous ants) can keep up with the insectivorous birds in their capacity to suppress plant-eating insect populations on a global scale,” he adds.
A study from 2017 which Nyffeler also led showed that spiders consume between 400 and 800 million tonnes of insects each year. Other predator groups like bats, primates, shrews, hedgehogs, frogs, salamanders, and lizards seem to be valuable yet less effective natural enemies of plant-eating insects. He says their influence seems to be more biome-specific rather than on a worldwide scale. For instance, lizards help to suppress insects on tropical islands, but less so on a broader scale.
“Birds are an endangered class of animals because they are heavily threatened by factors such as afforestation, intensification of agriculture, spread of systemic pesticides, predation by domestic cats, collisions with human-made structures, light pollution and climate change. If these global threats cannot soon be resolved, we must fear that the vital ecosystem services that birds provide — such as the suppression of insect pests — will be lost,” says Nyffeler.
Read the full paper Insectivorous birds consume an estimated 400–500 million tons of prey annuallyhere
“It’s coming home. It’s coming home. It’s coming, the Insurance Corporation Conservation Awards 2018 are coming home“.
OK so not as catchy, but the sentiment is the same. Our work with the choughs (see earlier blog entry here) claimed top prize at this year’s Insurance Corporation Conservation Awards. And yes, we are well chuffed.
Michelle Arundale, Chairperson of the Judging Panel and organiser of the event, said that this was the first time they had to draw up a shortlist of entries in the awards’ 28 year history. Michelle said, “we had such a fabulous response this year and we were delighted to see such a variety of projects entering.” and that judging provided “a chance to meet the inspirational people behind the projects doing their utmost to enhance our natural environment in so many different ways.”
Michelle Arundale, Chairperson of the Judging panel and organiser of the event. Photo courtesy of Insurance Corporation
You can watch an edited version of ITV News interview here. It looks at how the choughs and Ronez Quarry have been working together to improve Jersey’s biodiversity.
Angela Salmon, one of the judges this year, noted “The projects have involved many members of our community and these projects will be enjoyed by adults and children. The people leading the winning projects showed great knowledge, understanding and enthusiasm for nature conservation and they are also keen to share their knowledge by educating others.”
We will use the prize money to enable school groups visiting the quarry to learn about Jersey’s wildlife and develop field skills in bird identification. The remaining money will be used to pay for the DNA sexing of this year’s wild chicks.
Awards ceremony held at the Pomme D’or Hotel. Photo courtesy of Insurance Corporation
There was a shared sentiment amongst the nominees that whilst we have submitted individual projects we are all working towards the same goal. And that all the projects are inter-linked in some respect. For example, Littlefeet’s beach cleans are important to the wildlife species Durrell are trying to save. Birding Tours Jersey need birds otherwise the tours would be really boring! Removing plastic waste from the beach helps Jersey’s seabird population stay afloat (literally!).
Birding Tours Jersey, was this year’s runner-up receiving £1000 towards the free birding tours given to islanders. This year they have hosted three puffin watch tours and several dawn chorus walks to highlight the wonders of Jersey wildlife. And to add to the connection to nature that our projects share, Neil was one of the first chough volunteers before leaving to start Birding Tours.
Neil Singleton and partner Alison Caldeira receiving the runner-up prize. Photo courtesy of Insurance Corporation
Another nice link was seen with the Conservationist of the Year Award and the Peter Walpole People’s Choice Award. Both of which were awarded to Sarah Maguire for her BioBlitz project in schools. BioBlitz is run through the Jersey Biodiversity Records Centre. Sarah also works for Durrell in our Education team at the Zoo.
Sarah Maguire (middle) won two awards for her BioBlitz project. Photo courtesy of Insurance Corporation
It is cliché to say it, but everyone is a winner in the conservation awards. Unlike a certain World Cup.
Winners and nominees of the Insurance Corporation Conservation Awards 2018. Photo courtesy of Insurance Corporation
The painted lady butterfly is a migratory species in Europe, and common visitor to the Channel Islands, previously known to migrate from Europe to the Afrotropics during the autumn. Butterflies are obviously much harder to track on migration than birds and the fate of this butterfly species and its offspring remained unknown. Butterfly migration can be very different to that in birds where a bird like the swallow moves between, often very distant but well demarcated, summer and winter areas. The best known butterfly migration is perhaps that of the monarch in North America where despite there being well known and well demarcated summer and winter areas, generations of monarchs will never see the winter areas but are essential in the species life cycle (see the fascinating story of the monarch here).
Researchers were now able to demonstrate that painted lady butterflies return from the Afrotropical region to recolonise the Mediterranean in early spring, travelling an annual distance of 12,000 km across the Sahara Desert.
This butterfly species travels 12,000 km and crosses the Sahara Desert twice to seasonally exploit resources and favourable climates on both sides of the desert. Few species are known to perform annual long-range trans-Saharan circuits, and that of the painted lady is the longest migratory flight known in butterflies to date.
In a previously published study, the researchers demonstrated that painted lady butterflies migrate from Europe to tropical Africa by the end of summer, crossing the Mediterranean Sea and Sahara Desert.
The fate of these migrants and that of their offspring remained unknown. “Our hypothesis was that the species initiates a reverse northward migration towards Europe in spring, thus completing a regular migratory cycle,” states Roger Vila, one of the researchers.
The answer is in the wings
With the aim of confirming this hypothesis, they studied the natal origin of the butterflies that reached the Mediterranean region in early spring. To do so, they analysed the stable hydrogen isotopes of the butterflies sampled in Morocco, Andalusia and Catalonia in Spain, Crete, Egypt and Israel.
An isotope is a form of a chemical element whose atomic nucleus contains a different number of neutrons compared to protons in the nucleus. In water, the proportion of hydrogen and its stable isotope depends on the geographical location. When absorbing water, this proportion is maintained in plants; it later remains in the caterpillars that feed on these plants, and, eventually, in adult butterflies.
By analysing the hydrogen stable isotopes found in the wings of adult butterflies, the researchers could determine where they had developed as caterpillars.
“It is difficult to study the movement of insects by means of observations, marking or radio tracking, since there are millions of individuals and they are very small. This is why finding out where a butterfly grew up before undergoing the metamorphosis by means of stable isotope analysis turns out to be extremely useful. It feels like magic,” says Gerard Talavera, who led the research.
The results show a major proportion of specimens stay in the Afrotropics during winter and that those recolonising the Mediterranean are most probably their offspring. This scenario closes the loop for the Palearctic-African migratory system of Vanessa cardui and shows that the annual distance travelled by the successive generations may reach about 12,000 km, including crossing of the Sahara Desert twice.
Whether the painted lady does regular migratory circuits similar to those of the monarch butterfly in North America was a matter of scientific debate. This research reveals the parallelisms in such a unique evolutionary adaptation.
Access the paper Round-trip across the Sahara: Afrotropical Painted Lady butterflies recolonize the Mediterraneanin early spring here
Crabbé Activity Centreis a newly renovated outdoor centre belonging to Jersey’s Youth Service and ideally located on the Island’s north coast. The centre has basic accommodation for those who are visiting, giving us a friendly holiday camp feel, ideally suited to this year’s theme, with all conveniences situated on site including a wood-fired pizza oven. For those who would rather not sleep in a bunk-bed or tent, there will be hotel rooms available nearby.
2018 theme
This year’s theme is ‘Environmental Partnership’ – inspired by groups/organisations working towards a common goal. Current or future.
Aim and objectives
The general aim of the IIEM is to enable Government bodies, NGO’s, environmental managers and individuals to discuss the status of the islands’ environments.
The 2018 IIEM has three objectives for delegates to:-
– Present a range of environmental topics relevant to their organisation and island, demonstrating collaboration and partnerships working, and the pros and cons and best practice therein.
– Discuss current or future projects which could effectively be undertaken throughout the Channel Islands and other regions, such as the Isle of Man and UK.
– Discuss the potential for a Channel Island Environmental Charter.
Intended audience
The IIEM is aimed at ecological, conservation, environmental management bodies (government/NGO) and individuals from the Channel Islands and other regions, such as the Isle of Man and UK.
IIEM talk/poster presentation requirements
Delegates from the Channel Islands and beyond are encouraged to present on research related to the IIEM objectives on either terrestrial, ornithological or marine topics, either via talk or poster formats. Please contact Jon Parkes (JonParkes@nationaltrust.je) or Nina Cornish (N.Cornish@gov.je) to discuss and submit your presentation ideas.
Talks
Talks will normally last for 15 minutes, with 5 minutes for questions. Presenters are requested to submit a title and abstract (maximum of 300 words) to Jon Parkes by Friday 13th July.
Poster
Poster presentations will be displayed. Posters should be formatted to A1 size, either landscape/portrait. Presenters are requested to submit a title and abstract (maximum of 100 words) to Jon Parkes by Friday 13th July. Boards and attachment material will be provided.
Field Trips
There is a Birds On The Edge guided walk on Thursday (20th September) at 13.30 to nearby Mourier Valley to talk about sheep grazing, choughs, habitat management and bird crops.
The Friday (21st) afternoon session will consist of three field trips of which delegates will be asked to choose an option and indicate their choice on the registration form. The options will be:
Grève de Lecq to Plémont by Kayak: Sea Bird Conservation – Identified areas for protection and monitoring. Led by Piers Sangan and Kazz from Wild Adventures. Note: numbers are restricted for this field trip and places will be allocated on a first come first serve basis
The Wetland Centre Tour: A chance to visit the National Trust for Jersey’s bird observatory and interpretation centre. Led by the Trust Rangers.
Plémont Restoration Site – The story so far: See the former holiday camp site and the work the Trust and its partners have done to return the site to nature. Led by The Trust’s Land Manager and Conservation Officer.
Registration
You can use the registration formhere and email the completed form to Jon Parkes at JonParkes@nationaltrust.je by Friday 29th June.
Spoiler alert! Ronez Quarry found the first hatched egg shell of the year on 23rd May. However, there are so many more things to report about from May that we will leave that golden nugget of information for later.
Spreading their wings
Reports continue to come in from both the south-west and north-west corners of the island. The pair roosting in St Ouen’s Bay repeatedly foraged around Corbière Lighthouse, the desalination plant, and the sand dunes. And they are just the places we know about. I suspect they have taken a cheeky gander at the golf courses that lie to the north and south of their roost.
Choughs foraging by the old radio tower at Corbiere. Photo by Liz Corry.
Mary and Bo searching for found near the lighthouse. Photo by Liz Corry.
Looking at the hard granite around Corbière you would think it slim pickings on the menu for the chough pair. However, if you watch closely they are quite adept at finding tasty morsels. Take a look at this video for example. Not entirely sure what it is they have found, but obviously in high demand.
There is plenty of food on offer closer to the release site. Thanks to a local resident sending in a photo, we found a group of choughs hanging out at a ‘secret’ spot behind Sorel Farm. A horse field currently vacant except for rabbits, pheasant, swooping house martins, and aforementioned choughs. Short pasture, dung, and very little disturbance. Idyllic. For choughs at least.
This is a video of a few in a different horse field by the quarry.
The pair at Plémont are still going strong. They abandoned their nest in a sea cave and relocated to a crevice outside. We have not seen them at Sorel for a very long time. They appear to be finding plenty of food where they are. As the swifts start their summer residency in the same area we could be in for some interesting interactions. It is certainly an impressive sight to see the acrobatic flights of both species together.
Chough exchange
On 22nd May four choughs from Jersey Zoo were caught up and transported to Paradise Park as part of our animal collection exchange. The birds travelled by boat in the Zoo van driven by our Head of Operations and a senior mammal keeper.
None of the choughs hold a valid license.
Gwinny, one of the four, has been with us at the Zoo since the very beginning. However, she failed to find a partner who shared her chick rearing aspirations. Maybe she will find her Mr Right in Cornwall.
On the return trip the van was loaded up with four different choughs, two Namaqua doves and a Madagascar partridge (pear tree to follow). They travelled on the freight ferry which meant a 4am, repeat 4AM!!, arrival in Jersey – a fog covered Jersey to boot.
Two new arrivals to a fog bound Jersey at sunrise (not that you can tell). Photo by Liz Corry.
Two of the choughs headed to Sorel where they will spend a month in quarantine acclimatising to life on the coast. We moved Han Solo, Jersey Zoo’s male, to the aviary the day before they arrived.
All three looked to be in good condition. We discovered Han Solo had a new claw growing through suggesting damage at an earlier date. He clearly has not been in any discomfort so no need to treat him.
A new claw growing out after previous damage resulted in loss of the old claw. Photo by Liz Corry.
The three boys will be housed separately to the free-ranging choughs during quarantine with opportunity to socialise (between ‘bars’) at feed times. In fact the first meeting between the two groups happened within minutes of reaching Sorel. Lots of shouting and displaying from the outside group at first thought to be directed at the newbies. After ten minutes of observations it became apparent they were just after the food locked away inside!
If all goes to plan the two males from Paradise Park and Han Solo from the Zoo will be released at the start of July.
In case any of you were curious as to the names of Han’s new friends…Chewbacca and Skywalker of course.
Let the judging commence
Judges visited Jersey’s short-listed contenders for this year’s Insurance Corporation Conservation Awards on May 23rd.
Ronez Quarry nominated our chough project for the work we do in collaboration with them to monitor and protect the wild population.
The quarry has been home to the choughs since the first soft-release back in 2013. This season we had at least eight pairs trying to raise chicks in the quarry.
Winners will be announced on 27th June. There are several awards up grabs with a total prize fund of £3,750. One of the awards is a People’s Choice Award worth £500. Social media voting will begin in June – get clicking!
Insurance Corporation Conservation Awards judges at Ronez Quarry. 23rd May 2018. Photo by Liz Corry.
If we are fortunate enough to receive any money it would go towards providing an educational experience for school groups visiting the quarry. A chance to learn about natural resources, coastal conservation, and of course the choughs. Any remaining money would go towards covering the costs involved in ringing and DNA sexing chicks (approximately £18 per chick).
Ronez Quarry
Wild nest updates
If all goes well then Han Solo and the boys will be joined by several wild-hatched fledglings in July. The day the judges visited the quarry was the same day we discovered the first chicks of 2018 had hatched.
Toby Caberet had found hatched egg shell near one of the known nest sites. Using a handheld endoscope camera we were able to confirm a record number of four chicks in a single nest.
Four recently hatched chough chicks in a nest at the quarry. Photo taken under licence by Toby Caberet.
This is amazing news as this particular pair are first time parents. The chicks are very young. They have a further six weeks before leaving the nest and, as we learnt last year, that still doesn’t guarantee they will make it to Sorel. As long as the parents can find enough insects they stand a good chance.
All the more reason to rejoice in the next bit of news.
(St) Mary had a little lamb, and St John and St Peter…
This month the Manx loaghtan lambs were moved from the farm in St Catherine’s to the grazing site at Sorel. They are now old enough to roam the cliff tops. Still very vulnerable. Bleating can be heard far and wide from ‘lost’ lambs whose mothers are two feet away hidden in the gorse. Please remember to close gates and keep dogs under control. Any mountain bikers, be alert! It might not be a brown rock on the path that you are about to ride over.
Ewes and their lambs are now out roaming free at Sorel. Photo by Liz Corry.
A new grazing site in St Peter’s Valley has become home to another flock of Manx loaghtan sheep brought in to graze the meadows and hopefully improve biodiversity in the area. You can see them if you visit Quetivel Mill, a National Trust property open every Monday and Tuesday (10am-4pm).
Lambs are now out and about at Sorel. Photo by Liz Corry.
And finally, we couldn’t sign off without including the following picture taken by Mick Dryden at Sorel Point. A rare spring migrant to the Island, a honey-buzzard, flying alongside one of our choughs. I bet that was a sight no one predicted they would see five years ago!
Honey-buzzard and chough at Sorel Point. Photo by Mick Dryden.
Choosing how you vote should not be a snap verdict based on a few minutes of television.
– Simon Cowell
Somewhat ironic, but a perfect opener. Voting is now open for the Insurance Corporation Conservation Awards 2018. The Peter Walpole People’s Choice Award recognises conservation efforts of individuals and groups working in Jersey.
The Insurance Corporation’s Managing Director Mandy Hunt says “whether it is a school who enter a large project or a young individual with a tiny project on their window sill, both are making a contribution to the protection of our valuable green spaces and our local flora and fauna. We award money to our successful entrants because we believe it is important to help with the funding as well as celebrate their diligence and hard work.”
We can’t make you vote for the chough project. Gianna on the other hand…
As previously reported, Ronez Quarry nominated the chough project to try and raise funding to monitor chicks in the nest. This includes a leg ringing kit and DNA sexing tests as you cannot visually distinguish males from females.
If awarded, the money would also provide an educational package for school groups visiting the quarry. This would include child-friendly binoculars, identification cards and other educational material. The quarry is home to several species of birds not just the choughs. Instead of just learning about Jersey’s natural resources they could also learn about it’s biodiversity, develop field skills in bird observation, and learn how they can contribute to the conservation of choughs.
Each project short-listed for the award has been filmed and shown via the Insurance Corporation’s Facebook page. Watch each short clip then vote for the project of your choice at the bottom of their page.
In all fairness, I should also mention that one of our very first chough volunteers is also in the running. Since leaving the project, Neil Singleton has gone on to set up Birding Tours – Jersey. Both visitors and residents delight in Neil’s talks and walks. A very committed and passionate naturalist.
You can vote more than once! All of the applicants are deserving of this award. Just watch and vote at the bottom of their page or here.
The winner will be announced at the awards ceremony on 20th June 2018 and will receive £500 to go towards their project.
The other obvious feature for regular readers of this or any other bird list is the changes to the order, relationships and even the birds’ scientific names. Many of us grew up with long held understanding of the order we put the birds in (start with divers and end with crows) and how they were related (divers and grebes, herons and storks). However, new technologies have made it much easier to look closely at every species and get a much better idea of who’s who and where they sit in the order. Wildfowl are first, and not just because they’re very cool but because they and the gamebirds are not that closely related to every other bird. And hawks and falcons aren’t related? No, and strangely that split should have been obvious before.
The list actually includes one, or two, other new species. That goose formerly known as the bean goose has become two species: taiga bean goose and tundra bean goose. Luckily for the list compilers, the Islands’ ornithologists had in recent years recorded which of the two bean geese, then considered the lower rank of subspecies, were being seen. The split, and upgrade to full species status, wasn’t hard to fit in. If everything was always so easy. Our other new bird was a Caspian gull. This eastern version of the herring gull was once considered just herring gull until analysis found that it was quite distinct. Only unlike the geese it doesn’t always look distinct and takes a real enthusiast to pick one out of the flock. Luckily this one’s finder and photographer not only knows his gulls but got a little assist in that it was ringed!
From 
Along with spiders, insectivorous birds play a vital role in consuming insects that would otherwise destroy forests or crops.
OK so not as catchy, but the sentiment is the same. Our work with the choughs (see earlier blog entry 
You can watch an edited version of ITV News interview 
From 
This year’s Inter-Island Environment Meeting (IIEM) will be held once again in Jersey, at Crabbé, St Mary on Thursday 20th and Friday 21st September.
