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Nicholas Per Huffeldt

@nphuffeldt.bsky.social
1.9K followers 1.7K following 284 posts

Senior scientist • Terrestrial and migratory bird research and monitoring in the Arctic. Based in Nuuk, Greenland. Avian biology • Arctic ecology • Influence of light cycles ArcticAvianBiology.com Personal account. Opinions & posts my own

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Reposted by Nicholas Per Huffeldt
Marine Chronobiology Network @marine-chronobio.bsky.social · 23/09/2026
Let's start with a #StarterPack! Here are some folks working on #biological #rhythms ⏰ in #marine #life. 🌊 If you do so, too, please get in touch and we will add you! #chronobiology #circadian #tidal #lunar #annual #MarineEcology #MarineLife #clocks #moon #tides
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Reposted by Nicholas Per Huffeldt
Dr Mark D. Scherz @markscherz.bsky.social · 21/09/2026
🚨We're hiring a new Curator of Mammals!!🚨 🦍🐕🦝🐅🦓🦌🐃🐖🐏🐫🐘🦏🦛🐿️🦔🦇🦥🦦🦨🦘🦡🐋🦭🦒🧸 Come join the Vertebrate Unit at @nhmdk.bsky.social—a fantastic team in the heart of Denmark's beautiful capital! Amazing collections, incredible history. Please share widely! 🧪🏛️ candidate.hr-manager.net/ApplicationI...
candidate.hr-manager.net
Tenure Track Assistant Professor or Associate Professor and Curator of Mammals
Tenure Track Assistant Professor / Associate Professor, and Curator of Mammals at Natural History Museum Denmark The Natural History Museum Denmark wishes to ap
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 16/09/2026
Bumping to the 🧪 🌍 🪶 and #Ornithology feeds Incredible amount of work by @mariemrouyer.bsky.social and 177 authors made this possible
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 15/09/2026
Great summary of the main points of our recent falcon article. Migrating peregrines adjust slower to warmer spring temps than resident gyrfalcons. Both species suffer during warm summers. 🪶 🌍 #Ornithology #RaptorResearch peregrinefund.org/news/new-stu...
peregrinefund.org
New Study Reveals How Climate Change Is Reshaping the Breeding Season for Arctic Falcons | The Peregrine Fund
Concerning news for falcons in the Arctic: a new study has linked warmer summers to fewer surviving young for both Gyrfalcons and Peregrine Falcons. But there’s a twist—the two species are reacting to...
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Reposted by Nicholas Per Huffeldt
Peregrines Greenland @kf-peregrine.bsky.social · 08/08/2026
New paper out: Resident and Migratory Falcons' Breeding Phenology and Productivity Respond Differently to Weather and Climate Change Across the Arctic. See it in Global Change Biology here: dx.doi.org/10.1111/gcb....
dx.doi.org
Resident and Migratory Falcons' Breeding Phenology and Productivity Respond Differently to Weather and Climate Change Across the Arctic
Climate change is altering breeding phenology and productivity of peregrine falcons and gyrfalcons across the circumpolar Arctic. Long-term monitoring shows that responses vary among study areas and ....
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Reposted by Nicholas Per Huffeldt
Nick Gulotta @nickgulotta-77.bsky.social · 06/08/2026
Check out this incredible cover photo taken by Knud Falk at the South Greenland study site he shares with @nphuffeldt.bsky.social
Global Change Biology cover
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Reposted by Nicholas Per Huffeldt
Nick Gulotta @nickgulotta-77.bsky.social · 06/08/2026
Excited to share this publication and pumped to see it featured on the cover of this issue! Thanks to an incredible group of collaborators for making it possible. Global Change Biology | Environmental Change Journal | Wiley Online Library onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Resident and Migratory Falcons' Breeding Phenology and Productivity Respond Differently to Weather and Climate Change Across the Arctic
Climate change is altering breeding phenology and productivity of peregrine falcons and gyrfalcons across the circumpolar Arctic. Long-term monitoring shows that responses vary among study areas and ....
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 07/08/2026
Nick @nickgulotta-77.bsky.social wrangled a team of falcon researchers from across the Arctic to find that migrant peregrines adjust annual phenology less than resident gyrfalcons in response to some environmental conditions 🌍 🪶 🧪 #Ornithology #RaptorResearch onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Resident and Migratory Falcons' Breeding Phenology and Productivity Respond Differently to Weather and Climate Change Across the Arctic
Climate change is altering breeding phenology and productivity of peregrine falcons and gyrfalcons across the circumpolar Arctic. Long-term monitoring shows that responses vary among study areas and ...
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 01/08/2026
#RaptorResearch
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 27/07/2026
Some country songs just ring true and reflect the happenings of real life. “…if I had a boat I'd go out on the ocean And if I had a pony I'd ride him on my boat” -Lyle Lovett
Icelandic ponies being lowered on to a small motorboat.
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 05/07/2026
What a strange migratory divide. Do the populations even mix? 🪶 Many red-necked phalaropes breed on small ponds in West Greenland. Had no idea that they probably go to the western side of Central America. #Ornithology 🌍 www.frontiersin.org/journals/eco...
Migration routes of the red-necked phalarope. Image from https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2019.00086/fullRed-necked phalarope female. Photo (c) N. Huffeldt
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 05/07/2026
We had a wildfire conversation before heading in a field campaign this summer. Wildfires are a real threat.
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 03/07/2026
In these trying times, seal potato 🦭 🥔
Seal potatoe
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 26/06/2026
Great opportunity for seabird research with the potential for immediate impact #Ornithology #PhDSky
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 11/06/2026
#RaptorResearch
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 02/06/2026
Snow is falling down. May has passed by, becoming June. Good morning Arctic.
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Reposted by Nicholas Per Huffeldt
Dr Ingrid Pollet @ingridpollet.bsky.social · 29/05/2026
It has been an honour to work with the long-term data set from Kent Isl. After a survival paper (doi:10.1098/rspb.2024.2710), here is a mate-switching paper. Huge thanks to @liamtaylor.bsky.social on this one! A third one is under review. #seabirds #OpenAccess www.sciencedirect.com/science/arti...
sciencedirect.com
Permanent and temporary mate switching in a long-lived seabird: insights from a 64-year study
In long-lived socially monogamous animals, pair bonds play a crucial role in breeding success. In many predominantly socially monogamous animals, howe…
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 28/05/2026
Worth a read! 🧪 🌍 #MovementEcology
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 27/05/2026
#RaptorResearch
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Reposted by Nicholas Per Huffeldt
Orit Peleg @oritpeleg.bsky.social · 22/05/2026
Fun to play a small part in this new work led by Tsevi Beatus and team: when the lights go off, honeybees simply stop flying and fall! (unlike flies and mosquitoes, which pull off smart maneuvers) Thanks to Richard Terrile in our lab for turning the lights off on bees, in the name of science 🐝🪰🦟
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Reposted by Nicholas Per Huffeldt
W. P. Mueller @wpmueller.bsky.social · 20/05/2026
#ornithology link.springer.com/article/10.1...
link.springer.com
The ecological importance of natural dark nights for circadian organization, metabolism and reproduction in birds - BMC Ecology and Evolution
The ability to assess and utilise the length of the daily light period has been identified as a key component of the physiological ecology regulating metabolism and reproduction across various vertebr...
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 21/05/2026
The snow buntings are back in full force in Nuuk, and this guy didn’t mind sharing the balcony during his dinner 🪶
Snow bunting at a bird feeder.
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 20/05/2026
How much do you trust AI for bird ID? I’ve run all three pictures through Merlin. Wilson’s snipe is the top hit. Common snipe comes up too. Merlin doesn’t give a probability for the matches… Is the ranking due to more training data available for Wilson’s vs commons or is it real? 🪶 #Ornithology
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 10/05/2026
Still puzzled by this one 🪶 Can anyone help with the ID?
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Reposted by Nicholas Per Huffeldt
Volker Rudolf @volkerrudolf.bsky.social · 06/05/2026
We’re looking for recommendations for an affordable camera to film slow motion of tadpole swimming. Doesn’t have to be crazy high tech or water proof, but decent frame rate and resolution to calculate velocity etc. Any suggestions would be highly appreciated 🙏🏼
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 03/05/2026
A call to get chronobiology away from only selected model organisms in the lab. Investigating ecology and diverse solutions to biological timekeeping in the wild will progress the field 🧪
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 30/04/2026
🚨 Bird alert 🪶 Snipe in Nuuk, but which one?! 1st impression was common, but the underwing and birdNET of call suggest Wilson’s, though both are lower quality. Shadows reduced on underwing pic. BirdNET confidence was 8.7% and 1.8% on 2 detections. FYI snipes are rare here; both species possible
Snipe flying; underwing picSnipe flying; dorsal viewSnipe standing
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 30/04/2026
Postdoc available in herbivores and vegetation mapping, focusing on reindeer and muskoxen. Collab between Greenland Institute of Natural Resources, Cambridge Uni, and the Scott Polar Research Institute. More details, naalakkersuisut.emply.net/recruitment/... 🧪 🌍 #PhDSky #AcademicSky
naalakkersuisut.emply.net
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 22/04/2026
Full annual-cycle tracking elucidates migratory activity patterns and stopovers in nightingales 🪶 🧪 🌍 #Ornithology (3rd try to repost…)
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 22/04/2026
Full annual-cycle tracking elucidates migratory activity patterns and stopovers in nightingales 🪶 🧪 🌍 #Ornithology
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 18/04/2026
Job for experienced bird caretakers #Ornithology 🪶 🌍
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 14/04/2026
You are what you eat eats.
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 30/03/2026
Every wonder how deer, elk, and pronghorns use habitat across the annual cycle? This report should be a treasure trove of info for ungulates in the US. 🌍 🧪
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 24/03/2026
Looking for a postdoc on bird migration and have computer science or remote sensing skill? 🌍 🧪 🦑 #Ornithology
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Reposted by Nicholas Per Huffeldt
Sarah Gutowsky @halibirdnerd.bsky.social · 20/03/2026
You're invited to complete a short anonymous survey about device failures in bird biologger deployments! 📡 🦆 Responses accepted within the next 8 weeks. 📆 Survey link is in our bio 🔗 If you have questions please email failedbiologgingdevices@gmail.com 📧
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 21/03/2026
Bumping to #Ornithology 🪶 🌍
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Reposted by Nicholas Per Huffeldt
The Seabird Group @theseabirdgroup.bsky.social · 20/03/2026
Have any of your biologging devices ever failed? ⁉️ If so, we’d like to hear from you! 👂 Researchers at Acadia University, Nova Scotia, are investigating biologger device failure rates to help improve research practices. 🎓 The survey takes just 10 minutes to complete: forms.gle/fZW9n2dojJVB...
forms.gle
Anonymous survey — device failures in bird biologging studies
Purpose: We are collecting anonymous information about device failures in bird biologging research to help practitioners plan robust, ethical studies. Responses will be aggregated for a peer-reviewed ...
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 18/03/2026
Wondering how diel activity rhythms change across latitude? Check out Tash’s new paper. TLDR, Kittiwakes, a seabird, are flexible and range from 24-h rhythms at low latitude and appear to free-run or be arrhythmic at high latitude 🧪🪶🌍🦑
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 12/03/2026
Guesses of what kind of fish 🐟 this is?
Some sort of fantasy fish
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Reposted by Nicholas Per Huffeldt
ryan scharf @ryanscharf.com · 04/03/2026
tidyverse on the streets, base r in the sheets
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 04/03/2026
True story.
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 01/03/2026
New snow bunting research from our friends working in Iqaluit, Canada. Found that snow buntings breeding there have a broad longitudinal wintering range. Paywalled, so will have to wait until I’m in the office to read the entire article 🧪 🪶
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 24/02/2026
Fun read about (pie)bald eagles Excerpt of book by, @bittelmethis.bsky.social Couldn’t get the tag to post above #RaptorResearch 🪶 slate.com/technology/2...
slate.com
Americans Are Uniquely Infatuated With Bald Eagles. Too Bad Most of Us Have No Idea What They’re Actually Like.
For one thing, there's the sound they make.
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 21/02/2026
Dapper fellows. Arctic redpolls are the main passerine we have in Nuuk over the winter 🪶
Arctic redpolls in bird feederArctic redpolls in bird feeder
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 13/02/2026
Our paper on snow bunting activity and flight across the annual cycle spotlighted by J. Avian Biol. 🧪
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 12/02/2026
Postdoc available in Arctic marine bioacoustics and soundscape ecology Greenland Institute of Natural Resources Deadline: 10 March 🌍🦑 naalakkersuisut.emply.net/recruitment/...
naalakkersuisut.emply.net
Postdoc / Scientist in Arctic Bioacoustics and Soundscape Ecology
The Greenland Climate Research Centre (GCRC) at the Greenland Institute of Natural Resources (GINR) invites applications for a postdoctoral position in Arctic bioacoustics and soundscape ecology, with...
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 12/02/2026
We are hiring a benthic ecologist at the researcher or senior researcher level 🧪🌍🦑 The Greenland Institute of Natural Resources is an excellent place to work, with friendly colleagues, support, and teaching opportunities. naalakkersuisut.emply.net/recruitment/...
naalakkersuisut.emply.net
Researcher/Senior Researcher in Benthic Ecology at the Greenland Climate Research Center at the Greenland Institute of Natural Resources
The Greenland Climate Research Centre (GCRC) at the Greenland Institute of Natural Resources (GINR) invites applications for a position as researcher/senior researcher within the field of marine benth...
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 09/02/2026
Can confirm. The warmth is unseasonable here. Many of us are sorely missing snow for under our skis, and didn’t help that we had a misty rain today… www.information.dk/udland/2026/...
Cover of the newspaper Information for 10 Feb.
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 05/02/2026
Bumping this to the science feed 🧪 Interesting science to ponder the interplay between seasonality and circadian rhythms.
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Nicholas Per Huffeldt @nphuffeldt.bsky.social · 05/02/2026
Jenny writes great popular science pieces, plus the research is cool 🌍🧪
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