Ma fille Rose est sur place pour ses études. Qu’est-ce que ça doit être impressionnant.

Stunning illustration of mimicry! Common cuckoo eggs (top row) imitate the eggs of their host species (bottom row). The 30 October issue of Science explains this dazzling coevolution with genomic data — though I admit, it’s complex enough that I’d struggle to teach it! 🧪🌿🌎🦉

Les risques de désinformation climatique liés à l’IA. J’en ai parlé hier à la radio de Radio-Canada avec Patrick Lavoie, animateur de l’émission L’après-midi à nous. #climat #désinformation #IA #IntelligenceArtificielle #uqar #radio-canada À écouter ici 👉 urls.fr/d6RA_D

Un renard arctique à Paris ! Merci à @audelalis.bsky.social de m’avoir fait découvrir l’exposition Désert au Muséum national d’histoire naturelle. Je visitais les lieux pour préparer une rencontre scientifique internationale qui, je l’espère, aura lieu au Muséum dans quelques années. 🧪🌿🌎🦊

Camera traps in the polar desert: intriguing head movements of a male Snowy Owl perched on a bed of purple saxifrage. From our biodiversity monitoring study area at CFS Alert, Nunavut, Canada. 🌿🌎🦉 #wildlife

'What makes PhD students happy? Good supervision. Supervisors who invest in positive mentoring relationships with their PhD candidates also reap the benefits for their own research.' Nature, 23 Oct 2025. I’m amazed this is framed as a revelation — it’s pure common sense. 🧪🌎🌐

Camera traps in the polar desert: At 82°30′ North, this Peary caribou grazes atop a hill — and atop the world. From our biodiversity monitoring study area at CFS Alert, Nunavut, Canada (2 July 2025). 🧪🌿🌎🦊 #wildlife

Amazing. From: The global biomass of wild mammals, PNAS (2023), 120 (10) e2204892120 doi.org/10.1073/pnas...

Studying Arctic foxes on Bylot Island (Nunavut, Canada), or being studied by them? The collared fox in this photo is a male named Ram, captured this summer. Great shot by my excellent MSc student Laurianne Dumont. 🧪🌿🌎🦊 #MovementEcology #wildlife

Camera traps in the polar desert: A polar bear grazing on vegetation beside one of our arthropod traps — a rare sight in our biodiversity monitoring study area at CFS Alert, Nunavut, Canada. Not sure why they do this, but it’s not unheard of. 🧪🌿🌎🦊🐻‍❄️ #wildlife

Animals don’t know they’ll soon be released when we trap them for tagging. I couldn’t help but wonder what went through the mind of this Arctic fox as I held her (Bylot Island, Nunavut, Canada, summer 2025).🧪🌿🌎🦊

Last year I set up four polar bear sampling stations in our study area at Alert (Nunavut, Canada). Goal: collect pictures and hairs to document the understudied Arctic Basin population. This one, from 8 August 2025, is our first good photo ! 🧪🌿🌎🌐🦑🦊 (barbed wire for genetic hair collection visible)

You don’t need to love birding to enjoy Northern Gannets gliding at sunset over a calm sea. Picture taken during a boat trip off Prince Edward Island, Canada on August 4th, 2025.🌿🌎🦉🦑

You know you love birding when… you double-check that this young Great Black-backed Gull has all 12 retrices (tail feathers) as expected. Picture taken during a boat trip off Prince Edward Island, Canada on August 4th, 2025.🌿🌎🦉🦑

You know you love birding when… you find the molting pattern in the primaries of this adult American Herring Gull both 'very interesting' and 'aesthetic.' Picture taken during a boat trip off Prince Edward Island, Canada on August 4th, 2025.🌿🌎🦉🦑

Took hundreds of pictures this summer on Bylot Island (Nunavut, Canada), but only now had time to go through them. This molting Arctic fox giving a cute nose-lick while staring at me in the tundra is one of my favorites. 🌿🦊

Dr. Jane Goodall filmed an interview with Netflix in March 2025 that she understood would only be released after her death.

Trump: "We've got a lot of stupid people in this country running things."

Short visit last week at the Churchill Wildlife Management Area (Manitoba, Canada). A bit early for polar bears 🐻‍❄️, but a few were already around! 🌿🦑🦊Learn more about the place: environmentalchange.hsieteachers.com/churchill---...

Very interesting week at the 7th International Arctic Fox Conference, held last week at the Churchill Northern Studies Centre (Manitoba, Canada). Little time to explore, but spotted many beluga whales and one polar bear! 🧪🌿🌎🦑🦊🐻‍❄️https://churchillscience.ca/international-fox-conference/

C’est important d’être dynamique quand on fait une conférence… mais sans dépasser les limites ! La semaine dernière, j'étais peut-être un peu trop excité en parlant de mes recherches sur les renards arctiques dans un colloque à Churchill au Manitoba. #UQAR. 😅

We publish in Ecology 30 years of Arctic wildlife monitoring on Bylot Island (Nunavut, Canada)! Our long-term dataset tracks 35 species across 400 km² of tundra, providing rare insights into community dynamics, food webs, and climate responses. Open data for all at bitly.cx/OnOI2 🌍🦊🦉🦑 🧪🌿🌐

Canids seem to be the routine lovers, reusing their travel routes more than felids. This shapes hunting, encounters, and even disease spread. Insights from 1,239 GPS-tracked carnivores, including the Arctic foxes we track on Bylot Island 🧪🌿🌎🌐🦊. Read in the latest PNAS at bitly.cx/TxI2

Drove 10 hours to Canadian Forces Base Trenton to catch a C-130 Hercules to Greenland & Ellesmere. Flight cancelled (plane needed for forest fire response in Canada). Drove 10 hours back home. Oh well, this is part of Arctic field work! Next year will be better. Picture: inside a Hercules (2024).

Just back from animal ecology field work on Bylot Island, Nunavut. Taking a moment to share this picture of me walking near one of our beautiful short-term camps (background=Baffin). Not all work was that glamorous; I’ll share more ‘usual’ moments later. Now heading to Alert, Ellesmere Island.🧪🌿🌎🦉🦊🐻‍❄️

L’Ile Bylot, en face du village de Pond Inlet au Nunavut. C’est là que je rejoindrai demain mes étudiantes de l’ #UQAR, déjà arrivée il y a un mois pour nos recherches sur la faune arctique.

Bylot Island seen from Pond Inlet, Nunavut. Another world for those coming from the South.

Everything is nice in the new Iqaluit airport… Inuit art within Iqaluit airport, Nunavut, Canada. 🌿🌎🦊🦑🐻‍❄️ #wildlife. 13 June 2025, on my way to Bylot Island.

Inuit art within Iqaluit airport, Nunavut, Canada. 🌿🌎🦊🦑🐻‍❄️ #wildlife

Scientific American covered our #MovementEcology work on Arctic foxes a couple of years ago, beautifully illustrating their continental-scale dispersal across Arctic Canada, through islands and sea ice straits.🧪🌿🌎🦊🌐🦑🐻‍❄️ #wildlife. If interested, enlarge map below (with full reference to article).

I'll be heading to Bylot Island (Nunavut) in a few days to study Arctic fox movements and Arctic biodiversity. My students are already there. Watch the video to feel what it’s like landing in the snowy tundra around mid-June (helicopter sound included). Impressive. 🦊🧪🌿🌎🌐 #wildlife

Two lifers... First time using a parabolic microphone (Wildtronics + Zoom F3) and first time creating a spectrogram (Audacity + Raven). Song sparrow, of course! Rimouski (Québec), June 2025. 🌿🌎🦉🔊 #wildlife

Les recherches sur la biodiversité de l'Arctique sont fascinantes et cruciales mais coûtent incroyablement cher. C'est toujours un combat de réussir à les mener; je l'ai expliqué à la journaliste Matisse Harvey de Radio-Canada. Lire à lc.cx/EZlUw- 🧪🌿🌎🌐🦊 #uqar #wildlife

White-nose syndrome has very severe consequences for North American bats, yet it’s largely overlooked by the public because neither bats nor the syndrome make for attractive photos. Exciting new discoveries on the syndrome in the latest Nature (lc.cx/5QJ8kM) 🧪🌿🌎🌐 #wildlife

The Snowy Owl, Québec’s provincial bird, has just been assessed as Threatened in Canada. This species nests in one of the fastest-changing climates on the planet. I took this photo of a Snowy Owl chick in our Alert biodiversity monitoring area (Nunavut) during the 2019 lemming peak. 🌿🌎🦉 #wildlife

"in light of current events in our nation" [...] "The Ecological Society of America and the vast community of environmental researchers and practitioners know that this is the time to band together and offer support to each other." Read at lc.cx/QEtKWi 🧪🌐🦑🦊🐻‍❄️

Le harfang des neiges, emblème du Québec, est désormais « menacé ». J'en ai parlé, ainsi que de la biodiversité, avec Denis Leduc sur Radio-Canada : lc.cx/ndTqjY (15h46). J'avais pris cette photo de poussins à Alert (Nunavut, Canada) lors du pic de lemmings de 2019. #uqar 🌿🌎🦉 ‪@qcbs.ca

Placing a hand in a polar bear footprint is always a humbling experience. This picture was taken on May 7th, 2025, in our CFS Alert study area, Nunavut, Canada. 🌿🌎🦑🦊🐻‍❄️ #wildlife

Last week we had a great group of ecologists for a research residency! Mathew Leibold, researcher at University of Florida and member of the INTP board, @dominiqueberteaux.bsky.social, researcher at @uqar.bsky.social and @emiliedesjardins.bsky.social, PhD candidate at @uqar.bsky.social 🧪🌐🌍

Problem solving

Sometimes you dig through your old pictures and find gems like this baby North American porcupine in Parc national du Bic (Quebec). We spent nights in the woods studying their ecology, and I learned that you CAN pet a porcupine—just make sure you’re going in the right direction! 🧪🌿🌎🦊 #wildlife

"So, what’s your claim? 🤔 Here’s some useful advice for those writing a PhD thesis or supervising one. Check it out: www.nature.com/articles/d41... 🧪🌐

Action on the sea ice: An Arctic wolf chases away a polar bear while other pack members rest nearby on the sea ice. While not a rare event, it's also not a common one at our CFS Alert biodiversity study area, Nunavut, Canada. Picture by Richard Cayer, 20 September 2020. 🌿🌎🦑 #addMam #wildlife

Many marine mammals in this issue #addOcean

Culture is surprisingly widespread across the animal kingdom. Major conservation agencies are now starting to recognize its big implications for conservation agendas. Check out this fascinating, open-access issue at: royalsocietypublishing.org/toc/rstb/202... 🧪🌿🌎 #wildlife

Interesting how Arctic ecological monitoring can be biased toward warmer and less variable temperature conditions. I’ve added my CFS Alert monitoring site and fieldwork period to this insightful graph by @zacklabe.com. Plus, an Arctic hare. 🧪🌿🌐🌎 #wildlife

L'île Bylot au Nunavut, un endroit que j'aime visiter chaque année pour mes recherches écologiques. Ce tableau reflète à peu près ce que l'on observe du village de Pond Inlet.

Just finished the 18 lessons of the newly-released, free online course thebullshitmachines.com, exploring the benefits and harms of ChatGPT and other LLM assistants (took me about 3 hours). I thought I knew a lot about generative AI, but this made me think deeper. 🧪

Excellente nouvelle! Je vais pouvoir demander à mes enfants de laisser leur téléphone... tout en continuant à regarder le mien! 🤣