Jan von Rönn
@jac-vr.bsky.social
Ornithologist @vogelwarte.bsky.social | Swiss Ringing Centre | Always torn between #Swiss mountains and the #Baltic sea.
bird migration | phenology | population dynamics | demography | ringing
bird migration | phenology | population dynamics | demography | ringing
Reposted by Jan von Rönn
Based on thousands of citizen-science observations across Italy, our study shows that many hunted game bird species 🐦 start their pre-breeding migration earlier than reported in the European Commission’s “Key Concepts Document” (KCD) 🇪🇺
www.researchgate.net/publication/...
www.researchgate.net/publication/...
(PDF) Phenology of migrating game birds in Italy based on citizen science data
PDF | Studying the timing of the seasonal movements of migratory birds, known as migration phenology, is crucial for managing and conserving migratory... | Find, read and cite all the research you nee...
www.researchgate.net
December 30, 2025 at 3:00 PM
Based on thousands of citizen-science observations across Italy, our study shows that many hunted game bird species 🐦 start their pre-breeding migration earlier than reported in the European Commission’s “Key Concepts Document” (KCD) 🇪🇺
www.researchgate.net/publication/...
www.researchgate.net/publication/...
Reposted by Jan von Rönn
House Martins are declining in Switzerland. To help them, our team conducted a study and recommend installing artificial nests withing 500m of occupied sites and using playback of conspecific vocalizations. doi.org/10.1111/csp2...
December 23, 2025 at 2:43 PM
House Martins are declining in Switzerland. To help them, our team conducted a study and recommend installing artificial nests withing 500m of occupied sites and using playback of conspecific vocalizations. doi.org/10.1111/csp2...
Reposted by Jan von Rönn
NEW JOB in #ornithology with @vogelwarte.bsky.social to unravel the demographic drivers of population change in Alpine #swifts in #Switzerland: buff.ly/crV1rT8
December 23, 2025 at 3:45 PM
NEW JOB in #ornithology with @vogelwarte.bsky.social to unravel the demographic drivers of population change in Alpine #swifts in #Switzerland: buff.ly/crV1rT8
Reposted by Jan von Rönn
Have you read our recent paper looking at how #COVID19 #lockdown changed foraging behavior of #redkites in Switzerland? 🦅 (🧵⬇️) doi.org/10.1098/rsbl...
@vogelwarte.bsky.social @royalsocietypublishing.org
@vogelwarte.bsky.social @royalsocietypublishing.org
November 26, 2025 at 8:24 AM
Have you read our recent paper looking at how #COVID19 #lockdown changed foraging behavior of #redkites in Switzerland? 🦅 (🧵⬇️) doi.org/10.1098/rsbl...
@vogelwarte.bsky.social @royalsocietypublishing.org
@vogelwarte.bsky.social @royalsocietypublishing.org
Reposted by Jan von Rönn
EARLY VIEW in IBIS
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin (Riparia riparia) population in northwestern Italy over two decades | onlinelibrary.wiley....
Giulia Masoero, Alberto Tamietti | #ornithology 🪶
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin (Riparia riparia) population in northwestern Italy over two decades | onlinelibrary.wiley....
Giulia Masoero, Alberto Tamietti | #ornithology 🪶
December 1, 2025 at 4:11 PM
EARLY VIEW in IBIS
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin (Riparia riparia) population in northwestern Italy over two decades | onlinelibrary.wiley....
Giulia Masoero, Alberto Tamietti | #ornithology 🪶
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin (Riparia riparia) population in northwestern Italy over two decades | onlinelibrary.wiley....
Giulia Masoero, Alberto Tamietti | #ornithology 🪶
Reposted by Jan von Rönn
December 2, 2025 at 1:25 PM
Reposted by Jan von Rönn
Since 2021, HPAI outbreaks have affected unprecedented amounts of bird and mammal species throughout the world.
In a new study @jappliedecology.bsky.social we show how to quantify these demographic impacts—and reveal severe effects on an atypical host: the peregrine falcon.
doi.org/10.1111/1365...
In a new study @jappliedecology.bsky.social we show how to quantify these demographic impacts—and reveal severe effects on an atypical host: the peregrine falcon.
doi.org/10.1111/1365...
Evaluating the demographic impacts of the highly pathogenic avian influenza panzootic
Our findings demonstrate that the HPAIV panzootic can cause rapid and long-lasting impacts on the dynamics of long-lived species. This raises major concerns for the conservation and long-term viabili....
doi.org
December 2, 2025 at 2:53 PM
Since 2021, HPAI outbreaks have affected unprecedented amounts of bird and mammal species throughout the world.
In a new study @jappliedecology.bsky.social we show how to quantify these demographic impacts—and reveal severe effects on an atypical host: the peregrine falcon.
doi.org/10.1111/1365...
In a new study @jappliedecology.bsky.social we show how to quantify these demographic impacts—and reveal severe effects on an atypical host: the peregrine falcon.
doi.org/10.1111/1365...
Reposted by Jan von Rönn
Phenological Plasticity and Its Temperature‐Related Drivers in Common Songbirds Across Europe
🔗 buff.ly/9UXQdSb
🔗 buff.ly/9UXQdSb
December 1, 2025 at 5:59 PM
Phenological Plasticity and Its Temperature‐Related Drivers in Common Songbirds Across Europe
🔗 buff.ly/9UXQdSb
🔗 buff.ly/9UXQdSb
Reposted by Jan von Rönn
🎉 New article out: 🎉
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin population in northwestern Italy over two decades 🐦
doi.org/10.1111/ibi....
@bou.org.uk
#ornithology #climatechange #OpenAccess
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin population in northwestern Italy over two decades 🐦
doi.org/10.1111/ibi....
@bou.org.uk
#ornithology #climatechange #OpenAccess
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin (Riparia riparia) population in northwestern Italy over two decades
In recent decades, vertebrates, particularly birds, have exhibited notable morphological changes in response to climate change. In birds, these temporal trends usually entail a decrease in body mass ...
doi.org
November 28, 2025 at 6:51 AM
🎉 New article out: 🎉
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin population in northwestern Italy over two decades 🐦
doi.org/10.1111/ibi....
@bou.org.uk
#ornithology #climatechange #OpenAccess
Not everyone is shrinking: increases in body mass and wing length in a Sand Martin population in northwestern Italy over two decades 🐦
doi.org/10.1111/ibi....
@bou.org.uk
#ornithology #climatechange #OpenAccess
Reposted by Jan von Rönn
🌺🥤Trait matching affects the probability of nectar robbing in plant–pollinator networks
📷 © Stéphane Aubert
vist.ly/4g9h5
#Hummingbird #NectarRobbing #Pollination #TraitMatching
📷 © Stéphane Aubert
vist.ly/4g9h5
#Hummingbird #NectarRobbing #Pollination #TraitMatching
November 27, 2025 at 5:05 PM
🌺🥤Trait matching affects the probability of nectar robbing in plant–pollinator networks
📷 © Stéphane Aubert
vist.ly/4g9h5
#Hummingbird #NectarRobbing #Pollination #TraitMatching
📷 © Stéphane Aubert
vist.ly/4g9h5
#Hummingbird #NectarRobbing #Pollination #TraitMatching
Reposted by Jan von Rönn
Schon angemeldet? Die BirdLife-Naturschutztagung am 22. November bietet die Möglichkeit, trockenen Fusses nasse Lebensräume zu erkunden. Sie macht versteckte Interaktionen zwischen Wasser und Land sichtbar und fördert dein blau-grünes Netzwerk. Anmeldung bis 14. Nov:
www.birdlife.ch/de/content/t...
www.birdlife.ch/de/content/t...
BirdLife-Naturschutztagungen | BirdLife Schweiz/Suisse/Svizzera
www.birdlife.ch
November 11, 2025 at 9:43 AM
Schon angemeldet? Die BirdLife-Naturschutztagung am 22. November bietet die Möglichkeit, trockenen Fusses nasse Lebensräume zu erkunden. Sie macht versteckte Interaktionen zwischen Wasser und Land sichtbar und fördert dein blau-grünes Netzwerk. Anmeldung bis 14. Nov:
www.birdlife.ch/de/content/t...
www.birdlife.ch/de/content/t...
Reposted by Jan von Rönn
1/9 New in @science.org www.science.org/doi/10.1126/science.ado8005
How does genetic architecture constrain evolutionary trajectories? To address this question, we inferred the genetic architecture of convergent plumage coloration and its evolutionary history in wheatears.
How does genetic architecture constrain evolutionary trajectories? To address this question, we inferred the genetic architecture of convergent plumage coloration and its evolutionary history in wheatears.
A mosaic of modular variation at a single gene underpins convergent plumage coloration
The reshuffling of genomic variation from multiple origins is an important contributor to phenotypic diversification, yet insights into the evolutionary trajectories of this combinatorial process and ...
www.science.org
October 17, 2025 at 5:50 AM
1/9 New in @science.org www.science.org/doi/10.1126/science.ado8005
How does genetic architecture constrain evolutionary trajectories? To address this question, we inferred the genetic architecture of convergent plumage coloration and its evolutionary history in wheatears.
How does genetic architecture constrain evolutionary trajectories? To address this question, we inferred the genetic architecture of convergent plumage coloration and its evolutionary history in wheatears.
Reposted by Jan von Rönn
Exciting science news on plumage colouration and genetic variation from our colleagues!
1/9 New in @science.org www.science.org/doi/10.1126/science.ado8005
How does genetic architecture constrain evolutionary trajectories? To address this question, we inferred the genetic architecture of convergent plumage coloration and its evolutionary history in wheatears.
How does genetic architecture constrain evolutionary trajectories? To address this question, we inferred the genetic architecture of convergent plumage coloration and its evolutionary history in wheatears.
A mosaic of modular variation at a single gene underpins convergent plumage coloration
The reshuffling of genomic variation from multiple origins is an important contributor to phenotypic diversification, yet insights into the evolutionary trajectories of this combinatorial process and ...
www.science.org
October 17, 2025 at 6:52 AM
Exciting science news on plumage colouration and genetic variation from our colleagues!
Reposted by Jan von Rönn
Our new @science.org paper is out! Cuckoos and hosts are locked in a coevolutionary arms race over egg mimicry.
But how are these egg types inherited, and could this drive speciation? We sequenced hundreds of genomes to find out!
doi.org/10.1126/scie...
🧵1/6
But how are these egg types inherited, and could this drive speciation? We sequenced hundreds of genomes to find out!
doi.org/10.1126/scie...
🧵1/6
Genomic architecture of egg mimicry and its consequences for speciation in parasitic cuckoos
Host-parasite arms races facilitate rapid evolution and can fuel speciation. Cuculus cuckoos are deceptive egg mimics that exhibit a broad diversity of counterfeit egg phenotypes, representing host-ad...
doi.org
October 30, 2025 at 7:15 PM
Our new @science.org paper is out! Cuckoos and hosts are locked in a coevolutionary arms race over egg mimicry.
But how are these egg types inherited, and could this drive speciation? We sequenced hundreds of genomes to find out!
doi.org/10.1126/scie...
🧵1/6
But how are these egg types inherited, and could this drive speciation? We sequenced hundreds of genomes to find out!
doi.org/10.1126/scie...
🧵1/6
Reposted by Jan von Rönn
Matrilines attack,
for the hosts there is no hope.
Egg kaleidoscope.
www.science.org/doi/10.1126/...
for the hosts there is no hope.
Egg kaleidoscope.
www.science.org/doi/10.1126/...
Genomic architecture of egg mimicry and its consequences for speciation in parasitic cuckoos
Host-parasite arms races facilitate rapid evolution and can fuel speciation. Cuculus cuckoos are deceptive egg mimics that exhibit a broad diversity of counterfeit egg phenotypes, representing host-ad...
www.science.org
October 31, 2025 at 9:37 AM
Matrilines attack,
for the hosts there is no hope.
Egg kaleidoscope.
www.science.org/doi/10.1126/...
for the hosts there is no hope.
Egg kaleidoscope.
www.science.org/doi/10.1126/...
Reposted by Jan von Rönn
I did something very special this week. had the big honour to speak at the opening of ‘#Johtingeaidnu – The Path Within’ a prize winning art exhibition of Emilia Tikka with Oula and Leena Valkeapää. special, because the opening speech I was asked to give should be on #epigenetics -
April 12, 2025 at 2:50 PM
I did something very special this week. had the big honour to speak at the opening of ‘#Johtingeaidnu – The Path Within’ a prize winning art exhibition of Emilia Tikka with Oula and Leena Valkeapää. special, because the opening speech I was asked to give should be on #epigenetics -
Reposted by Jan von Rönn
🚨🎉 New paper "Ten quick tips to get you started with Bayesian statistics", hope you'll like it 😇🤗
✍🏽 w/ Andy Royle, Marc Kéry and Chloé Nater
🔗 dx.plos.org/10.1371/jour...
@plos.org @cnrsecologie.bsky.social @cnrsoccitanieest.bsky.social @umontpellier.bsky.social
✍🏽 w/ Andy Royle, Marc Kéry and Chloé Nater
🔗 dx.plos.org/10.1371/jour...
@plos.org @cnrsecologie.bsky.social @cnrsoccitanieest.bsky.social @umontpellier.bsky.social
April 11, 2025 at 4:23 AM
🚨🎉 New paper "Ten quick tips to get you started with Bayesian statistics", hope you'll like it 😇🤗
✍🏽 w/ Andy Royle, Marc Kéry and Chloé Nater
🔗 dx.plos.org/10.1371/jour...
@plos.org @cnrsecologie.bsky.social @cnrsoccitanieest.bsky.social @umontpellier.bsky.social
✍🏽 w/ Andy Royle, Marc Kéry and Chloé Nater
🔗 dx.plos.org/10.1371/jour...
@plos.org @cnrsecologie.bsky.social @cnrsoccitanieest.bsky.social @umontpellier.bsky.social
Reposted by Jan von Rönn
Reposted by Jan von Rönn
