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Bernard Cadiou

@bernard-cadiou.bsky.social
464 followers 417 following 220 posts

Seabird monitoring programme in Brittany, France. #stormpetrel biology And also cooking, juggling, drawing...

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Reposted by Bernard Cadiou
Lundy Bird Observatory @lundybirds.bsky.social · 19/07/2026
Celebrating 20yrs Rat free this year! One of the biggest successes on the island is the seabirds, but for Manx Shearwaters it has been phenomenal. One of our box birds from today, the fact we have 15,000 and they breed successfully was unthinkable 30yrs ago!
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RSPB Science @rspbscience.bsky.social · 03/07/2026
Two of the world’s largest Gannet colonies may not recover from the impact of bird flu until 2041 at the earliest, study finds Read a summary: www.rspb.org.uk/whats-happen... Full paper: doi.org/10.1016/j.biocon.2026.111887 #seabirds #hpai 🪶 🧪
Caption: A pair of Gannets

Credit: RSPB / Chelsie Jones

Alt text: Two Gannets with pale yellow heads and blue eyes touching beak tips and arching necks in a courtship display against a blurred grey sea background.Figure 3 from the paper: (A): Estimated impact of reduced adult survival in 2022 on colony growth trajectories for the Bass Rock and Grassholm gannet colonies (orange line) compared to a theoretical baseline scenario without an outbreak (grey line) until the year 2045. Blue dots represent drone-based count data; Bass Rock 2023 and 2024 (Harris et al., 2023, Burton et al., 2024), Grassholm 2023 and 2024 (Morgan et al., 2023; Morgan and Stephens, 2024). (B) The residual between the baseline and HPAI scenarios highlights the scale of the impact and the long recovery times for both colonies. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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Dr Sjúrður Hammer @sjurdur.bsky.social · 02/07/2026
How do fulmars respond to drones: #seabirds 🌍🧪
Figure showing observational distance and behavioural observations
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Bernard Cadiou @bernard-cadiou.bsky.social · 21/06/2026
The first case of H5N1 bird flu in Australia has been confirmed. What does this mean? theconversation.com/the-first-ca...
theconversation.com
The first case of H5N1 bird flu in Australia has been confirmed. What does this mean?
This is not the moment to call defeat. There is a chance we can stop this infectious virus, this time at least.
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Gavin Thomas @gtalstonwader.bsky.social · 19/06/2026
Sound up! #StormPetrels just past midnight at #Mousa Broch, #Shetland. A truly special experience. Invasive predators are a big risk to colonies so kudos to @rspbscotland.bsky.social #Shetland & @biosecuritylife.bsky.social teams for the recent rat incursion response. #seabirds #superseabirdsunday
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Michelle Wille @duckswabber.bsky.social · 18/06/2026
Finally published, is the outcome of surveys and HPAI detections in skua species in 2024/25. Detections as far south as Marguarite Bay. 👉 www.cambridge.org/core/journal...
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Bernard Cadiou @bernard-cadiou.bsky.social · 13/06/2026
"It is never too late to start a long term monitoring survey, but it is always too early to stop it" I have start a ringing programme on European storm-petrels in 1997 and ring my 30,000 birds this week 😀 #seabirds
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Bernard Cadiou @bernard-cadiou.bsky.social · 13/06/2026
#SeabirdSaturday European storm-petrel
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Rosemarie Kentie @rooskentie.bsky.social · 10/06/2026
Lesser black-backed gulls avoid offshore wind farms - but not because they are attracted by the fishing boats outside of those windfarms New article on #seabirds #ornithology besjournals.onlinelibrary.wiley.com/doi/10.1111/... @robvanbemmelen.bsky.social, @judyshamounb.bsky.social
besjournals.onlinelibrary.wiley.com
Offshore wind farm avoidance by a discard‐feeding seabird is independent of local fishing activity
Fishing is not allowed within wind farms; therefore, discard-feeding seabirds may appear to avoid wind farm areas. We found that most Lesser Black-backed Gulls avoided the wind farm area, but not eac....
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Elina Mäntylä @elinamantyla.bsky.social · 12/06/2026
Piro et al. Tracking of adult males and females across a migratory divide: migration strategies of a western baltic common tern (Sterna hirundo) population link.springer.com/article/10.1... #ornithology #seabirds
link.springer.com
Tracking of adult males and females across a migratory divide: migration strategies of a western baltic common tern (Sterna hirundo) population - Movement Ecology
Background European Common Terns’ migration routes along the eastern Atlantic flyway and wintering areas in western and southern Africa were identified in ringing studies. Recent tracking studies reve...
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NinaDehnhard.bsky.social @ninadehnhard.bsky.social · 04/06/2026
New article out on #plastics in #fulmars. Thanks to my wonderful Master student & great colleagues in Norway & Iceland, as well as fishers in both countries, we now sit with a lot more knowledge about plastics in #seabirds in the North Atlantic. www.nina.no/english/Abou...
nina.no
Eight out of ten northern fulmars have plastic in their stomachs
Northern fulmar (Fulmarus glacialis). Photo: Nina Dehnhard/NINA. The northern fulmar (Fulmarus glacialis) is a seabird found across the North Atlantic and Arctic marine regions, including along the N...
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Adrift Lab (Marine Science) @adriftlab.bsky.social · 25/05/2026
In our #NewPaper, we developed a minimally invasive test to detect the hidden harm from plastic ingestion in live #seabirds. By looking at proteins in the blood, we identified a biological signature of plastic-associated damage doi.org/10.1016/j.en...
doi.org
Redirecting
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Liam U. Taylor @liamtaylor.bsky.social · 12/05/2026
Colony managers know it The literature ignores it! Many seabirds are young - juvenile, immature, subadult, prebreeder - and we know v little about them! Here's our paper on why you should care about young seabirds for conservation! W/ @ejgnam2.bsky.social doi.org/10.1002/fee....
PHOTO CREDIT FRANCESCO VENTURA. (One of the best seabird researchers working now -- check out Francesco's work!). In front center left, a prebreeding Black-Browed Albatross visits the breeding colony on Steeple Jason.
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Martin George @jannerbirder.bsky.social · 13/05/2026
A fascinating story, with some gorgeous artwork, too. #Seabirds
smithsonianmag.com
How 'Seabird Sue' Blends Art and Science to Attract Birds Back to Lost Habitat
For the past decade, Sue Schubel has been making detailed decoys of terns, puffins and other seabirds to entice real ones to restored or new homes
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Wildlife Biology @wildlifebiology.bsky.social · 04/05/2026
Variation in food availability affects the population age structure of Atlantic puffins Fratercula arctica in the Faroe Islands vist.ly/42u2s #JuvenileFishIndex #SeaBirds
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Marine Ornithology @marineorno.bsky.social · 08/04/2026
🚨 In press: Seasonal variation in trophic niche and resource use in Great Black-backed Gulls by Langlois-Lopez et al. #seabirds #TeamGull #OpenAccess www.marineornithology.org/PDF/54_1/54_...
A flying adult Great Black-backed Gull over the water. Photo by Luke Seitz.
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Julia Baak, Ph.D. ❄️🦆🧪 @juliaellenbaak.bsky.social · 11/03/2026
As a #seabird #biologist, I know all to well how difficult it can be to deploy tracking devices that last long enough on the #bird! This new study uses 3D-printed clamp systems to deploy tracking devices on #seabirds. Read the full paper here: link.springer.com/article/10.1...
link.springer.com
A novel non-permanent attachment method for bird-borne tracking devices using 3D-printed clamps - Journal of Ornithology
Collecting GPS positions on bird movements requires secure and efficient attachment methods that maintain animal welfare. For seabirds, one of the most threatened bird groups globally, non-permanent a...
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Bernard Cadiou @bernard-cadiou.bsky.social · 15/02/2026
Massive wreck of #puffins #seabirds in France, Spain and Portugal after successive storms (same period as the 2014 event) All age classes founded: 1st winter, immature and adults
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SEAPOP.bsky.social @seapop.bsky.social · 11/12/2025
New large-scale study based on SEAPOP data shows that #ocean #warming threatens #seabirds in the North Atlantic @ninanatureresearch.bsky.social
seapop.no
Ocean warming threatens seabirds in the North Atlantic
Climate change is causing ocean warming, acidification and loss of sea ice. This, in turn, is leading to shifting biogeographic distribution and in some cases species extinction.
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Kirsty Franklin @kirstyfranklin.bsky.social · 24/11/2025
Studying for an MSc this year & looking for a #seabird research project? We're looking for a student to help investigate the factors that influence #StormPetrel response rates during playback surveys. 🔊🐣 🔗Do get in touch if you have any Qs: www.rspb.org.uk/helping-natu... #seabirds #ornithology
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SEAPOP.bsky.social @seapop.bsky.social · 20/11/2025
#biologging #research is booming - but do #loggers actually impact the birds? Yes, they do - depending on the mass and attachment location. If you work with biologging, you should read our latest publication seapop.no/en/2025/11/l... @ninanatureresearch.bsky.social #seabirds
seapop.no
Loggers attached to birds can affect foraging behaviour
Loggers have become a central part of research on seabirds and other groups of animals over the past 20 years. In seabird research, loggers provide very useful documentation of diving behaviour…
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UK Centre for Ecology & Hydrology (UKCEH) @ukceh.bsky.social · 05/11/2025
Importantly, birds that remained with the same partner tended to lay eggs earlier, which is strongly tied to how many chicks they rear 🐣. See our news story: ceh.ac.uk/news-and-med... Read the full paper: sciencedirect.com/science/arti... #seabirds #ClimateChange 🧪
ceh.ac.uk
Seabirds are more likely to ‘divorce’ in bad weather
Wild seabirds are more likely to split up in windy weather, according to a new study involving the UK Centre for Ecology & Hydrology.
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Alice Edney @aliceedney.bsky.social · 23/09/2025
🚨 New #seabirds paper 🚨 Following a workshop at the International Seabird Group Conference 2024 & led by @seabirdmortenf.bsky.social, we review opportunities & challenges for new technologies in seabird monitoring 🎥💻🐣 Link below! ⬇️ #ornithology doi.org/10.1093/ices...
doi.org
Opportunities and challenges for new technologies in seabird population monitoring
Abstract. Monitoring of seabird population size and demography has for decades relied on observer-based methods. While such methods have allowed the accumu
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Bernard Cadiou @bernard-cadiou.bsky.social · 18/08/2025
Older #stormies are close to fledge in Brittany, Western France, youngest are fluffy, and a few adults are still brooding their chick or incubating their egg #seabirds #stormpetrels
60-65 days old European storm petrel close to fledge in Brittanyfluffy European storm petrel chick in Brittany
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International Biodiversity @ibioconsultants.com · 11/08/2025
Using an automated recognition system to monitor endangered seabird breeding colonies 🌍 #Seabirds #AI #RecognitionSystems #Ecology www.sciencedirect.com/science/arti...
sciencedirect.com
Integrating AI into ecology for fully automated monitoring of endangered seabird breeding colonies
The rapid pace of human-related development and environmental instability has placed significant pressure on global ecosystems, threatening the existe…
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Andreas Ravache @andreasravache.bsky.social · 17/07/2025
🍽️🐦 Proteomic studies reveals that #Seabirds with plastic in their stomachs had signs of neurodegenerative disease, kidney and liver disease as well as damage to the lining of the stomach ☠️While not always lethal, microplastics will undoubtedly have long-term effects on populations.
science.org
Seabirds in crisis: Plastic ingestion induces proteomic signatures of multiorgan failure and neurodegeneration
Plastic consumption in seabirds causes blood signatures of widespread organ damage including brain, stomach, kidney, and liver.
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World Seabird Union @worldseabirdunion.bsky.social · 20/07/2025
To protect wildlife as offshore wind grows, we need the best ecological data. Monash University researchers created a practical guide to seabird flight—how high, how fast & when they fly. 📄 Journal of Applied Ecology: bit.ly/4eXfqQw #Seabirds #ClimateAndNature
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Bernard Cadiou @bernard-cadiou.bsky.social · 12/06/2025
1st jumps of the oldest young guillemots at cap Frehel, Brittany
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Bernard Cadiou @bernard-cadiou.bsky.social · 15/05/2025
Hatching time for gulls in Brittany #TeamGull
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Steffen Oppel @steffopp.bsky.social · 09/05/2025
NEW PAPER in #ornithology provides a tool to inspect connectivity of #seabirds and other marine megafauna in the #oceans: buff.ly/C2ZBHwD Tool is here: buff.ly/Mh64gTo
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Seabird Ecology Lab @seabirdecology.bsky.social · 29/03/2025
EDEC SA works for #CaboVerde govern and changed Brava street & port lights from yellow to strong white LED. A few days later >150 Cape Verde, Leach and WF #StormPetrels & Boyd's #shearwaters collisioned and died. Despite #ProjectoVito warned DNA, 3d later lights are on m.facebook.com/story.php?st...
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Rick @rickylongthread.bsky.social · 14/03/2025
History repeats itself
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American Bird Conservancy @abcbirds.bsky.social · 14/03/2025
Albatross Chick Alert! 😍 The world's oldest known banded wild #bird, a Laysan Albatross affectionately known as Wisdom, is officially parent to another chick on Midway Atoll National Wildlife Refuge! @friendsofmidway.bsky.social
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Samanta Wilde @samantawildlife.bsky.social · 10/03/2025
Fuck. #SpurnBirds
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Elina Mäntylä @elinamantyla.bsky.social · 10/03/2025
Lockwood et al. What the Cat Dragged in: Quantifying Prey Return Rates of Pet Cats (Felis catus) With Outdoor Access in the UK onlinelibrary.wiley.com/doi/full/10.... #CitizenScience
onlinelibrary.wiley.com
What the Cat Dragged in: Quantifying Prey Return Rates of Pet Cats (Felis catus) With Outdoor Access in the UK
This study used predation survey techniques (citizen science) in order to quantify prey return rates across the UK, along with potential influencing factors. Although between 37 and 140 million prey ...
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Michelle Wille @duckswabber.bsky.social · 24/02/2025
In France, gulls and gannets infected with different genotypes. In gannets, a single wave, but in gulls long and repeated outbreaks. Really interesting dive into the nitty gritty of the seabird outbreaks in Europe. 👉 onlinelibrary.wiley.com/doi/10.1155/...
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Graham Appleton @wadertales.bsky.social · 21/02/2025
5 years ago we learnt which Oystercatchers cross the Atlantic 🎂5️⃣ wadertales.wordpress.com/2020/02/21/w... Then we learnt about the role of fathers: wadertales.wordpress.com/2021/02/02/o... And discovered how migrancy/residency affects success: wadertales.wordpress.com/2022/08/07/w... #ornithology
wadertales.wordpress.com
Which Icelandic Oystercatchers cross the Atlantic?
Most Icelandic Oystercatchers leave Iceland in the autumn, crossing the Atlantic and arriving in Ireland, the UK and mainland Europe. Despite much shorter day-length and colder conditions, 30% spen…
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Le Cartographe 🗺️🍷 @lecartographe.bsky.social · 16/02/2025
Les Bretons en train de négocier avec @ignfrance.bsky.social 😆 Golfe de Bretagne
Carte de l’Océan Atlantique avec, de manière très pertinente, une représentation d’un potentiel Golfe de Bretagne !
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Dr Tammy Davies @tammyedavies.bsky.social · 17/02/2025
🚨NEW OPEN ACCESS PAPER🚨details how we delineated six #MarineFlyways applying a novel approach onto #seabird #tracking data: doi.org/10.1111/geb.70004 🧪 See the short animation via: www.seabirdtracking.org/case-studies... explaining how the marine flyways can be a framework to support #conservation
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Le nid de pie @leniddepie.bsky.social · 07/02/2025
Avec l'accord de Marine Joumard, la fabuleuse illustratrice de "l'éthologie (presque) facile", j'ai eu envie de vous présenter les étapes de création de la couverture du livre. Et pour fuir les algos, je l'ai écrit sur MON BLOG (ET OUAIS): www.leniddepie.com/2025/02/07/u...
leniddepie.com
Une couverture (presque) facile - Le nid de pie
Lors de la création d'un livre, il faut toujours réfléchir très vite à sa couverture. Voici comment est née celle de "l'éthologie (presque) facile" en collaboration avec l'illustratrice Marine Joumard...
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Eric Lagadec @ericlagadec.bsky.social · 05/02/2025
Je crois qu'il devient clair que nous, scientifiques, avons un rôle majeur à jouer pour former et informer les citoyens. Il faut plus de culture scientifique !
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Steph Harris @stephharris.bsky.social · 15/01/2025
New paper in @currentbiology.bsky.social on seabird wind use and foraging decisions! doi.org/10.1016/j.cu... We estimated wind selectivity in Manx shearwaters and explored how birds handle the trade-off between being wind efficient and targeting known foraging areas @sosbangor.bsky.social
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Martin George @jannerbirder.bsky.social · 31/12/2024
The researchers “investigated how breeding timing affects migratory strategies in the Manx Shearwater (Puffinus puffinus), a trans-hemispheric migratory seabird with large temporal variation in the onset of breeding.” #Seabirds www.nature.com/articles/s41...
nature.com
Night flight facilitates late breeding catch-up in a long-distance migratory seabird - Scientific Reports
Scientific Reports - Night flight facilitates late breeding catch-up in a long-distance migratory seabird
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Víctor Martín-Vélez @victormartinvel.bsky.social · 11/12/2024
Paper alert 🚨🐦‍⬛📣 Here, we characterize the #plasticpollution present in #gull chicks stomachs... #seabirds #Barcelona @jnavarro.bsky.social @tmontal.bsky.social @odeigg.bsky.social SPOILER: sadly, all samples showed #microplastics...👇 www.sciencedirect.com/science/arti...
sciencedirect.com
Characterization of plastic ingestion in urban gull chicks and its implications for their use as pollution sentinels in coastal cities
The increase of plastic pollution represents a significant ecological threat, particularly in human-impacted environments. However, the effects of pla…
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Bernard Cadiou @bernard-cadiou.bsky.social · 31/07/2024
1st #stormies of the season with a Portuguese ring in #molene archipelago
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Bernard Cadiou @bernard-cadiou.bsky.social · 20/07/2024
here is the smallest egg of storm petrel ever recorded in the #Molene archipelago: about 16x13mm instead of 28x21mm! small eggs regularly seen in clutches of gulls or oystercatchers but not in #stormies
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Bernard Cadiou @bernard-cadiou.bsky.social · 16/06/2024
Catching guillemots and razorbills for GPS tracking at cap Frehel, Brittany #ailesmarines #MIGRATLANE
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Bernard Cadiou @bernard-cadiou.bsky.social · 08/06/2024
1st ringing session of #stormies in Molene archipelago: strange result... only 356 captures during 3 consecutive nights; mainly breeders, wandering prebreeders aged 2-3 years old were absent!
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Bernard Cadiou @bernard-cadiou.bsky.social · 25/05/2024
1st razorbill and guillemot chicks at cap Frehel, Brittany 🐣 not on the photo but one of the few briddled individuals (about 1% of the breeders are briddled
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