Nicholas Per Huffeldt
@nphuffeldt.bsky.social
Senior Scientist • Arctic chronoecology • Avian migration. Leading terrestrial bird research and monitoring at Pinngortitaleriffik, GL.
http://nphuffeldt.wordpress.com
Personal account. Opinions & posts my own
http://nphuffeldt.wordpress.com
Personal account. Opinions & posts my own
Last night the sky danced like I’ve never seen before. It was wild. 🔭
November 16, 2025 at 11:17 PM
Last night the sky danced like I’ve never seen before. It was wild. 🔭
Greenland Science Week starting off with a strong discussion on the importance of science for Greenlandic society and how to harmonize international and national interests for the benefit of society.
#GreenlandScienceWeek #SciPol
#GreenlandScienceWeek #SciPol
November 12, 2025 at 11:12 AM
Greenland Science Week starting off with a strong discussion on the importance of science for Greenlandic society and how to harmonize international and national interests for the benefit of society.
#GreenlandScienceWeek #SciPol
#GreenlandScienceWeek #SciPol
Reposted by Nicholas Per Huffeldt
Seasonal vs opportunistic breeders, a seasonal morphological and endocrine comparative study of the gonadal cycle in birds | www.sciencedirect.co... | General and Comparative Endocrinology | #ornithology 🪶
Seasonal vs opportunistic breeders, a seasonal morphological and endocrine comparative study of the gonadal cycle in birds
Avian reproduction is usually seasonal and strongly influenced by environmental factors, primarily photoperiod, which is mainly perceived by deep brai…
www.sciencedirect.com
November 11, 2025 at 10:25 AM
Seasonal vs opportunistic breeders, a seasonal morphological and endocrine comparative study of the gonadal cycle in birds | www.sciencedirect.co... | General and Comparative Endocrinology | #ornithology 🪶
Do songbirds align (migratory) flights to a specific part of their diel rhythm?
In the snow bunting, nope, it’s flexible, but they keep a 24-h rhythm year round, even in Arctic summer.
Includes a glossary of chronobiology terms relevant to ecology and migration 🪶 🧪 🌍
dx.doi.org/10.1002/jav....
In the snow bunting, nope, it’s flexible, but they keep a 24-h rhythm year round, even in Arctic summer.
Includes a glossary of chronobiology terms relevant to ecology and migration 🪶 🧪 🌍
dx.doi.org/10.1002/jav....
Flexibility in the diel migratory schedule of an Arctic songbird despite robust 24‐h activity rhythms across the annual cycle
Many birds schedule their activity to a specific phase of the diel (24-h) light–dark cycle. Two notable exceptions are the nocturnal migration of many otherwise diurnal songbirds and the diverse acti....
dx.doi.org
October 28, 2025 at 9:57 PM
Do songbirds align (migratory) flights to a specific part of their diel rhythm?
In the snow bunting, nope, it’s flexible, but they keep a 24-h rhythm year round, even in Arctic summer.
Includes a glossary of chronobiology terms relevant to ecology and migration 🪶 🧪 🌍
dx.doi.org/10.1002/jav....
In the snow bunting, nope, it’s flexible, but they keep a 24-h rhythm year round, even in Arctic summer.
Includes a glossary of chronobiology terms relevant to ecology and migration 🪶 🧪 🌍
dx.doi.org/10.1002/jav....
Reposted by Nicholas Per Huffeldt
Reposted by Nicholas Per Huffeldt
There are forces in #nature that are at work that we don't experience or aren't aware of, but that are essential parts of the lives and spectacular numbers of creatures. For example, this from Ranjiangshang Ran and colleagues @pnas.org
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Electrostatics facilitate midair host attachment in parasitic jumping nematodes | PNAS
Jumping can be hazardous for entomopathogenic nematodes (EPNs) as those that fail
to attach to an insect host face death by predation or starvation...
www.pnas.org
October 18, 2025 at 3:15 PM
There are forces in #nature that are at work that we don't experience or aren't aware of, but that are essential parts of the lives and spectacular numbers of creatures. For example, this from Ranjiangshang Ran and colleagues @pnas.org
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Reposted by Nicholas Per Huffeldt
🚨 Master’s project!
Curious how birds find their way? 🧭🐦
Analyze decades of ringing data to study abnormal migratory routes and uncover what these deviations can reveal about the mechanisms guiding birds on their journeys. Drop me an email for details! #ornithology
www.vogelwarte.ch/de/wir/mitar...
Curious how birds find their way? 🧭🐦
Analyze decades of ringing data to study abnormal migratory routes and uncover what these deviations can reveal about the mechanisms guiding birds on their journeys. Drop me an email for details! #ornithology
www.vogelwarte.ch/de/wir/mitar...
October 3, 2025 at 7:11 AM
🚨 Master’s project!
Curious how birds find their way? 🧭🐦
Analyze decades of ringing data to study abnormal migratory routes and uncover what these deviations can reveal about the mechanisms guiding birds on their journeys. Drop me an email for details! #ornithology
www.vogelwarte.ch/de/wir/mitar...
Curious how birds find their way? 🧭🐦
Analyze decades of ringing data to study abnormal migratory routes and uncover what these deviations can reveal about the mechanisms guiding birds on their journeys. Drop me an email for details! #ornithology
www.vogelwarte.ch/de/wir/mitar...
Can’t sleep?
Tune your (internal) clock. Go outside in the middle of the day. Reduce those night time lights and midnight snacks.
www.nature.com/articles/d41...
Tune your (internal) clock. Go outside in the middle of the day. Reduce those night time lights and midnight snacks.
www.nature.com/articles/d41...
How to get the best night’s sleep: what the science says
Chuck the gadgets, the fads and the alarm. Circadian research reveals how important your body’s internal clock is to blissful slumber.
www.nature.com
September 30, 2025 at 7:36 PM
Can’t sleep?
Tune your (internal) clock. Go outside in the middle of the day. Reduce those night time lights and midnight snacks.
www.nature.com/articles/d41...
Tune your (internal) clock. Go outside in the middle of the day. Reduce those night time lights and midnight snacks.
www.nature.com/articles/d41...
The Danish national news published a collection of photos from seabird work in Greenland taken by Carsten Egevang.
The pics are great illustrations of my previous haunts, and one of me looking particularly scruffy is buried in the bunch 🪶 #Seabird
www.dr.dk/nyheder/vide...
The pics are great illustrations of my previous haunts, and one of me looking particularly scruffy is buried in the bunch 🪶 #Seabird
www.dr.dk/nyheder/vide...
I årtier har han fotograferet fuglene i Grønland: Her er 15 pletskud
www.dr.dk
September 24, 2025 at 9:15 PM
The Danish national news published a collection of photos from seabird work in Greenland taken by Carsten Egevang.
The pics are great illustrations of my previous haunts, and one of me looking particularly scruffy is buried in the bunch 🪶 #Seabird
www.dr.dk/nyheder/vide...
The pics are great illustrations of my previous haunts, and one of me looking particularly scruffy is buried in the bunch 🪶 #Seabird
www.dr.dk/nyheder/vide...
I definitely wasn’t early to the Listers party, but I’m glad I made it.
Can recommend to all birder adjacent and bird curious folks 🪶
m.youtube.com/watch?v=zl-w...
Can recommend to all birder adjacent and bird curious folks 🪶
m.youtube.com/watch?v=zl-w...
LISTERS: A Glimpse Into Extreme Birdwatching
YouTube video by owen reiser
m.youtube.com
September 21, 2025 at 9:52 PM
I definitely wasn’t early to the Listers party, but I’m glad I made it.
Can recommend to all birder adjacent and bird curious folks 🪶
m.youtube.com/watch?v=zl-w...
Can recommend to all birder adjacent and bird curious folks 🪶
m.youtube.com/watch?v=zl-w...
My photo published in @britishwildlife.bsky.social earlier this year has prompted this carefully considered paper. I wrote about my encounter with this ghost of an extinct species in my book The Long Spring #naturewriting
EARLY VIEW in IBIS
A Neolithic rock engraving apparently showing a Great Auk being captured | onlinelibrary.wiley....
Tim R. Birkhead, Robert Montgomerie | #ornithology 🪶
A Neolithic rock engraving apparently showing a Great Auk being captured | onlinelibrary.wiley....
Tim R. Birkhead, Robert Montgomerie | #ornithology 🪶
September 18, 2025 at 11:11 PM
Reposted by Nicholas Per Huffeldt
Applications open! ❄️ KU’s Arctic Biology Field Course 2026 takes students to Greenland to study freshwater ecosystems: fish, algae mats, predator–prey interactions & more. 🌊🐟🌿
👉 Apply by Oct 24: kurser.ku.dk/course/nbik1...
@kirstenseesternc.bsky.social
👉 Apply by Oct 24: kurser.ku.dk/course/nbik1...
@kirstenseesternc.bsky.social
September 17, 2025 at 7:28 AM
Applications open! ❄️ KU’s Arctic Biology Field Course 2026 takes students to Greenland to study freshwater ecosystems: fish, algae mats, predator–prey interactions & more. 🌊🐟🌿
👉 Apply by Oct 24: kurser.ku.dk/course/nbik1...
@kirstenseesternc.bsky.social
👉 Apply by Oct 24: kurser.ku.dk/course/nbik1...
@kirstenseesternc.bsky.social
Want to decide whether to apply for that grant call?
This tool f.unding.com can help you decide if it’s worth it.
From doi.org/10.1111/imcb... by @dresler.bsky.social
#PhDSky #AcademicSky 🧪
This tool f.unding.com can help you decide if it’s worth it.
From doi.org/10.1111/imcb... by @dresler.bsky.social
#PhDSky #AcademicSky 🧪
f.unding.com
September 14, 2025 at 5:51 PM
Want to decide whether to apply for that grant call?
This tool f.unding.com can help you decide if it’s worth it.
From doi.org/10.1111/imcb... by @dresler.bsky.social
#PhDSky #AcademicSky 🧪
This tool f.unding.com can help you decide if it’s worth it.
From doi.org/10.1111/imcb... by @dresler.bsky.social
#PhDSky #AcademicSky 🧪
Migratory birds aren’t equally efficient at all speeds. A new Lund University study shows thrush nightingales fly most efficiently at 7–8 m/s – the speed they actually use on migration.
@pablomaciastorres.bsky.social & Prof. Anders Hedenström, Animal Flight Lab.
www.biology.lu.se/article/not-...
@pablomaciastorres.bsky.social & Prof. Anders Hedenström, Animal Flight Lab.
www.biology.lu.se/article/not-...
September 5, 2025 at 3:32 PM
Nature does some wild stuff.
Crazy discovery in ants 🤯🐜
One mother for two species via obligate cross-species cloning in ants | Nature
www.nature.com/articles/s41...
"Males from the same mother exhibit distinct genomes and morphologies, as they belong to species that diverged over 5 million years ago."
One mother for two species via obligate cross-species cloning in ants | Nature
www.nature.com/articles/s41...
"Males from the same mother exhibit distinct genomes and morphologies, as they belong to species that diverged over 5 million years ago."
One mother for two species via obligate cross-species cloning in ants - Nature
In a case of obligate cross-species cloning, female ants of Messor ibericus need to clone males of Messor structor to obtain sperm for producing the worker caste, resulting in males from the same moth...
www.nature.com
September 4, 2025 at 4:39 PM
Nature does some wild stuff.
Reposted by Nicholas Per Huffeldt
🚨NEW PAPER🚨 We've already shown mosquito infections vary by time-of-day, here we test whether infection of mice FROM mosquitoes vary in a rhythmic manner. We test this in untreated & drug treated mice as some fitness consequences are only apparent in stressful environments doi.org/10.1186/s130...
August 15, 2025 at 1:09 PM
🚨NEW PAPER🚨 We've already shown mosquito infections vary by time-of-day, here we test whether infection of mice FROM mosquitoes vary in a rhythmic manner. We test this in untreated & drug treated mice as some fitness consequences are only apparent in stressful environments doi.org/10.1186/s130...
Circadian rhythms are pervasive and affect many different biological processes.
Can engineering the circadian system improve agriculture across latitudes? 🧪 🌍
Natural populations may not have the same ability to extend to new latitudes bc of the lack of phenotypic plasticity or genetic variation
Can engineering the circadian system improve agriculture across latitudes? 🧪 🌍
Natural populations may not have the same ability to extend to new latitudes bc of the lack of phenotypic plasticity or genetic variation
Delighted to share the lab’s first independent publication, a Tansley Insight in @newphyt.bsky.social where we analyse new crop genomics studies to show how we can engineer plants that can grow at different latitudes (key for climate-smart Ag) nph.onlinelibrary.wiley.com/doi/10.1111/...
August 14, 2025 at 11:29 AM
Circadian rhythms are pervasive and affect many different biological processes.
Can engineering the circadian system improve agriculture across latitudes? 🧪 🌍
Natural populations may not have the same ability to extend to new latitudes bc of the lack of phenotypic plasticity or genetic variation
Can engineering the circadian system improve agriculture across latitudes? 🧪 🌍
Natural populations may not have the same ability to extend to new latitudes bc of the lack of phenotypic plasticity or genetic variation
Your daily Avian Hybrids story!
The peculiar genomes of Falcons
avianhybrids.wordpress.com/2020/04/12/t...
#ornithology
The peculiar genomes of Falcons
avianhybrids.wordpress.com/2020/04/12/t...
#ornithology
The peculiar genomes of Falcons
Falcons are the odd ball out when it comes to avian genomics.
avianhybrids.wordpress.com
August 12, 2025 at 12:17 AM
Reposted by Nicholas Per Huffeldt
New review in PRX Life, where we propose a tangibility scale for the physics of social interactions, and highlight a few tangible examples - from dead fish “swimming” to efficient schooling, warm penguin huddles, and dry ant rafts.
Written with the brilliant Chantal Nguyen 🐟🐧🐜
tinyurl.com/naet5tdh
Written with the brilliant Chantal Nguyen 🐟🐧🐜
tinyurl.com/naet5tdh
July 27, 2025 at 12:11 AM
New review in PRX Life, where we propose a tangibility scale for the physics of social interactions, and highlight a few tangible examples - from dead fish “swimming” to efficient schooling, warm penguin huddles, and dry ant rafts.
Written with the brilliant Chantal Nguyen 🐟🐧🐜
tinyurl.com/naet5tdh
Written with the brilliant Chantal Nguyen 🐟🐧🐜
tinyurl.com/naet5tdh
Reposted by Nicholas Per Huffeldt
Share some more Nordic based researchers! Let's help boots each others profiles. go.bsky.app/V9URRDU
July 23, 2025 at 11:32 AM
Share some more Nordic based researchers! Let's help boots each others profiles. go.bsky.app/V9URRDU
Reposted by Nicholas Per Huffeldt
July 22, 2025 at 8:19 AM
First Arctic char—a beautiful fish
#flyfishing on an evening break from fieldwork in South Greenland.
#flyfishing on an evening break from fieldwork in South Greenland.
July 19, 2025 at 10:59 AM
First Arctic char—a beautiful fish
#flyfishing on an evening break from fieldwork in South Greenland.
#flyfishing on an evening break from fieldwork in South Greenland.
🇬🇱🇬🇱
Nunatta ullua pilluarit!
Glædelig nationaldag Grønland!
Nunatta ullua pilluarit!
Glædelig nationaldag Grønland!
June 22, 2025 at 12:22 AM
🇬🇱🇬🇱
Nunatta ullua pilluarit!
Glædelig nationaldag Grønland!
Nunatta ullua pilluarit!
Glædelig nationaldag Grønland!
A white-throated sparrow 🪶was seen for the first time in Greenland, and this was covered by one of the national newspapers.
I was asked why this little guy ended up here. Short answer, no idea, but was quoted more eloquently.
www.sermitsiaq.ag/kultur/spurv...
I was asked why this little guy ended up here. Short answer, no idea, but was quoted more eloquently.
www.sermitsiaq.ag/kultur/spurv...
Spurv langt væk hjemmefra
Peter Oluf Holm Meyer blev lidt af en berømthed i fugleverdenen, da han var så heldig at se en hvidstrubet spurv i sin have i Kolonihavnen i Nuuk.
www.sermitsiaq.ag
June 20, 2025 at 11:59 PM
A white-throated sparrow 🪶was seen for the first time in Greenland, and this was covered by one of the national newspapers.
I was asked why this little guy ended up here. Short answer, no idea, but was quoted more eloquently.
www.sermitsiaq.ag/kultur/spurv...
I was asked why this little guy ended up here. Short answer, no idea, but was quoted more eloquently.
www.sermitsiaq.ag/kultur/spurv...
Hybrid zones, chickadees, and climate change - worth a read
🧪🌍#Ornithology
🧪🌍#Ornithology
Replicate geographic transects across a hybrid zone reveal parallelism and differences in the genetic architecture of reproductive isolation
doi.org/10.1093/evle...
Now in @evolletters.bsky.social by Georgy Semenov et al.
doi.org/10.1093/evle...
Now in @evolletters.bsky.social by Georgy Semenov et al.
Replicate geographic transects across a hybrid zone reveal parallelism and differences in the genetic architecture of reproductive isolation
Abstract. Determining the genetic architecture of traits involved in adaptation and speciation is one of the key components of understanding the evolutiona
doi.org
June 20, 2025 at 12:57 AM
Hybrid zones, chickadees, and climate change - worth a read
🧪🌍#Ornithology
🧪🌍#Ornithology