Nicholas Per Huffeldt
@nphuffeldt.bsky.social
Senior scientist leading terrestrial and migratory bird research and monitoring at Pinngortitaleriffik, GL.
Avian biology • Arctic chronoecology • Light cycles
http://nphuffeldt.wordpress.com
Personal account. Opinions & posts my own
Avian biology • Arctic chronoecology • Light cycles
http://nphuffeldt.wordpress.com
Personal account. Opinions & posts my own
A group of ravens is called a conspiracy
And penguins = land dolphins (I heard this once so it must be true)
🪶 #Ornithology
And penguins = land dolphins (I heard this once so it must be true)
🪶 #Ornithology
- We should all be afraid of geese.
- Birds absolutely suck at Jenga.
- The collective noun for a group of birds is a “sky problem.”
(Happy National Bird Day!)
- Birds absolutely suck at Jenga.
- The collective noun for a group of birds is a “sky problem.”
(Happy National Bird Day!)
Everything We Currently Know About Birds
Birds. Most people just know them as those loud things that are always flapping around the sky like jackasses, but there’s actually much more to th...
buff.ly
January 5, 2026 at 10:40 PM
A group of ravens is called a conspiracy
And penguins = land dolphins (I heard this once so it must be true)
🪶 #Ornithology
And penguins = land dolphins (I heard this once so it must be true)
🪶 #Ornithology
Understandable. Looking forward to what y’all find out!
From my understanding, Greenland has suspended their participation at the political level of the council, but we can still participate in projects and funding calls.
From my understanding, Greenland has suspended their participation at the political level of the council, but we can still participate in projects and funding calls.
December 29, 2025 at 7:21 PM
Understandable. Looking forward to what y’all find out!
From my understanding, Greenland has suspended their participation at the political level of the council, but we can still participate in projects and funding calls.
From my understanding, Greenland has suspended their participation at the political level of the council, but we can still participate in projects and funding calls.
Do you have plans to include GL eggs?
December 29, 2025 at 6:24 PM
Do you have plans to include GL eggs?
How do birds sense the magnetic field to navigate?
The research field is slowly coalescing around a quantum mechanics mechanism described in the thread below.
#Ornithology 🪶
The research field is slowly coalescing around a quantum mechanics mechanism described in the thread below.
#Ornithology 🪶
We know that birds can sense magnetic fields for navigation. But how does that work?
Do they have little magnets wired up to their brains?
The most likely answer is 1000X times weirder than that, and involves quantum spin.
Let's talk about 'cryptochromes' & magnetic sensing.🧪
Do they have little magnets wired up to their brains?
The most likely answer is 1000X times weirder than that, and involves quantum spin.
Let's talk about 'cryptochromes' & magnetic sensing.🧪
![A blue and red feathered parakeet? with a simple bar magnet illustration overlayed on it, and yellow lines of force radiating out from the head. It also has the word "yes*" underneath it.
I stole this from a cover photo for a video on the topic from YouTuber "Learn with Kay" with title "Birds navigte with Magnets in their heads ??" [sic]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:r643qxafn6b3pxfffiodojbn/bafkreigvdthlwkzkkbjl63ykyyssyqbuhj4jxxkbxos6cfpanbfi7pwdv4@jpeg)
December 27, 2025 at 2:29 PM
How do birds sense the magnetic field to navigate?
The research field is slowly coalescing around a quantum mechanics mechanism described in the thread below.
#Ornithology 🪶
The research field is slowly coalescing around a quantum mechanics mechanism described in the thread below.
#Ornithology 🪶
Interesting - I’m going to check this out for teaching students about biological rhythms and light cycles
December 21, 2025 at 6:03 PM
Interesting - I’m going to check this out for teaching students about biological rhythms and light cycles
Happy solstice ❄️
In the Northern hemisphere we have our shortest day of the year.
In Nuuk the sun came up at 11:21 and will go down at 15:27 (3:27pm).
How much daylight do you have for the solstice?
In the Northern hemisphere we have our shortest day of the year.
In Nuuk the sun came up at 11:21 and will go down at 15:27 (3:27pm).
How much daylight do you have for the solstice?
December 21, 2025 at 2:37 PM
Happy solstice ❄️
In the Northern hemisphere we have our shortest day of the year.
In Nuuk the sun came up at 11:21 and will go down at 15:27 (3:27pm).
How much daylight do you have for the solstice?
In the Northern hemisphere we have our shortest day of the year.
In Nuuk the sun came up at 11:21 and will go down at 15:27 (3:27pm).
How much daylight do you have for the solstice?
Reposted by Nicholas Per Huffeldt
ARTISTS!
I need your help!
In collab. w/the Society for Integrative & Comparative Biology, I'm organizing a group of artists to come to our Jan. meeting! We're looking for artists to create based on what they learn at the conference. $1000 stipend.
Application is V short! forms.gle/ah1i8KwNJinZ...
I need your help!
In collab. w/the Society for Integrative & Comparative Biology, I'm organizing a group of artists to come to our Jan. meeting! We're looking for artists to create based on what they learn at the conference. $1000 stipend.
Application is V short! forms.gle/ah1i8KwNJinZ...
November 22, 2025 at 3:51 PM
ARTISTS!
I need your help!
In collab. w/the Society for Integrative & Comparative Biology, I'm organizing a group of artists to come to our Jan. meeting! We're looking for artists to create based on what they learn at the conference. $1000 stipend.
Application is V short! forms.gle/ah1i8KwNJinZ...
I need your help!
In collab. w/the Society for Integrative & Comparative Biology, I'm organizing a group of artists to come to our Jan. meeting! We're looking for artists to create based on what they learn at the conference. $1000 stipend.
Application is V short! forms.gle/ah1i8KwNJinZ...
Reposted by Nicholas Per Huffeldt
We churned through over 100 million radar samples to quantify the structure of migration through the airspaces across the United States: Just out in Ecology esajournals.onlinelibrary.wiley.com/doi/epdf/10....
November 20, 2025 at 6:20 PM
We churned through over 100 million radar samples to quantify the structure of migration through the airspaces across the United States: Just out in Ecology esajournals.onlinelibrary.wiley.com/doi/epdf/10....
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. 🔭
Recently, academia.edu caused a stir on this site because of their new terms of use. If you didn’t see it, maybe look into that discussion as a start
November 13, 2025 at 5:20 PM
Recently, academia.edu caused a stir on this site because of their new terms of use. If you didn’t see it, maybe look into that discussion as a start
Unanimous messaging from the panelists to include local communities, the public, and the need for research to benefit Greenlandic society.
November 12, 2025 at 11:48 AM
Unanimous messaging from the panelists to include local communities, the public, and the need for research to benefit Greenlandic society.
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 🪶
Surprisingly we do have Bohemian waxwings breeding near Nuuk—not sure where they came from…
October 28, 2025 at 10:17 PM
Surprisingly we do have Bohemian waxwings breeding near Nuuk—not sure where they came from…
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...
Thanks - a good starting place!
October 2, 2025 at 5:00 PM
Thanks - a good starting place!
This is very cool tech. Do you know whether there a step by step guide or any articles out there with very descriptive methods that could be adapted to teach students how to use RUBY?
October 2, 2025 at 6:10 AM
This is very cool tech. Do you know whether there a step by step guide or any articles out there with very descriptive methods that could be adapted to teach students how to use RUBY?
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...
1) Acknowledging the difference between causes and consequences of segregation.
2) acknowledging that spatial or temporal segregation is not in and of itself a cause to segregation.
3) discussion of the selective forces that can cause the segregation.
2) acknowledging that spatial or temporal segregation is not in and of itself a cause to segregation.
3) discussion of the selective forces that can cause the segregation.
September 23, 2025 at 12:46 AM
1) Acknowledging the difference between causes and consequences of segregation.
2) acknowledging that spatial or temporal segregation is not in and of itself a cause to segregation.
3) discussion of the selective forces that can cause the segregation.
2) acknowledging that spatial or temporal segregation is not in and of itself a cause to segregation.
3) discussion of the selective forces that can cause the segregation.
