Jeroen Reneerkens
@jeroen-reneerkens.bsky.social
Shorebird ecologist | #Sanderling | Avian migration | Greenland | Arctic | climate change | #ornithology |#shorebirds | #BirdMigration
Reposted by Jeroen Reneerkens
Missed our conference, or just want to see more amazing #wader #shorebird research?
Members can check out the early online #WaderStudy journal here ⬇️
www.waderstudygroup.org/publications... #ornithology
Members can check out the early online #WaderStudy journal here ⬇️
www.waderstudygroup.org/publications... #ornithology
September 30, 2025 at 3:51 PM
Missed our conference, or just want to see more amazing #wader #shorebird research?
Members can check out the early online #WaderStudy journal here ⬇️
www.waderstudygroup.org/publications... #ornithology
Members can check out the early online #WaderStudy journal here ⬇️
www.waderstudygroup.org/publications... #ornithology
Reposted by Jeroen Reneerkens
What happens to shorebirds when the mud disappears?
wadertales.wordpress.com/2022/10/15/w...
Blog from 15 Oct 2022 🎂3️⃣
#ornithology
wadertales.wordpress.com/2022/10/15/w...
Blog from 15 Oct 2022 🎂3️⃣
#ornithology
What happens when the mud disappears?
The Yellow Sea provides important ‘service stations’ for shorebirds on the East Asian-Australasian Flyway, especially on their way north to Russian and Alaskan breeding areas. In a thought-provokin…
wadertales.wordpress.com
October 15, 2025 at 6:52 AM
What happens to shorebirds when the mud disappears?
wadertales.wordpress.com/2022/10/15/w...
Blog from 15 Oct 2022 🎂3️⃣
#ornithology
wadertales.wordpress.com/2022/10/15/w...
Blog from 15 Oct 2022 🎂3️⃣
#ornithology
Reposted by Jeroen Reneerkens
Reminder!
@jeroen-reneerkens.bsky.social appreciates reports of colour-ringed Sanderlings:
submit.cr-birding.org/projects/181/
Counts of adult/juvenile Sanderlings in flocks are great too.
Blog about the Greenland Sanderling project:
wadertales.wordpress.com/2019/10/04/t...
📷 @markaeaton.bsky.social
@jeroen-reneerkens.bsky.social appreciates reports of colour-ringed Sanderlings:
submit.cr-birding.org/projects/181/
Counts of adult/juvenile Sanderlings in flocks are great too.
Blog about the Greenland Sanderling project:
wadertales.wordpress.com/2019/10/04/t...
📷 @markaeaton.bsky.social
October 3, 2025 at 6:50 AM
Reminder!
@jeroen-reneerkens.bsky.social appreciates reports of colour-ringed Sanderlings:
submit.cr-birding.org/projects/181/
Counts of adult/juvenile Sanderlings in flocks are great too.
Blog about the Greenland Sanderling project:
wadertales.wordpress.com/2019/10/04/t...
📷 @markaeaton.bsky.social
@jeroen-reneerkens.bsky.social appreciates reports of colour-ringed Sanderlings:
submit.cr-birding.org/projects/181/
Counts of adult/juvenile Sanderlings in flocks are great too.
Blog about the Greenland Sanderling project:
wadertales.wordpress.com/2019/10/04/t...
📷 @markaeaton.bsky.social
Reposted by Jeroen Reneerkens
Thank you to all of today's speakers for a really interesting array of talks! So much great research, and more on the way tomorrow! #IWSG2025 #waders #shorebirds #ornithology
September 27, 2025 at 3:25 PM
Thank you to all of today's speakers for a really interesting array of talks! So much great research, and more on the way tomorrow! #IWSG2025 #waders #shorebirds #ornithology
Reposted by Jeroen Reneerkens
A vagrant juvenile Sanderling turned up in Israel—likely after a single non-stop flight from the Dutch Wadden Sea. Here’s thread explaining why that’s remarkable and interesting. @wadertales.bsky.social @globalflyway.bsky.social #Birds #Migration
September 25, 2025 at 9:47 AM
A vagrant juvenile Sanderling turned up in Israel—likely after a single non-stop flight from the Dutch Wadden Sea. Here’s thread explaining why that’s remarkable and interesting. @wadertales.bsky.social @globalflyway.bsky.social #Birds #Migration
A vagrant juvenile Sanderling turned up in Israel—likely after a single non-stop flight from the Dutch Wadden Sea. Here’s thread explaining why that’s remarkable and interesting. @wadertales.bsky.social @globalflyway.bsky.social #Birds #Migration
September 25, 2025 at 9:47 AM
A vagrant juvenile Sanderling turned up in Israel—likely after a single non-stop flight from the Dutch Wadden Sea. Here’s thread explaining why that’s remarkable and interesting. @wadertales.bsky.social @globalflyway.bsky.social #Birds #Migration
Reposted by Jeroen Reneerkens
Colour-ring readers jave contributed greatly to the science underpinning 1️⃣0️⃣ years of WaderTales blogs.
One of the best studies, in terms of feedback to observers, is the Sanderling project run by @jeroen-reneerkens.bsky.social.
More here:
wadertales.wordpress.com/2019/10/04/t...
#ornithology
One of the best studies, in terms of feedback to observers, is the Sanderling project run by @jeroen-reneerkens.bsky.social.
More here:
wadertales.wordpress.com/2019/10/04/t...
#ornithology
September 12, 2025 at 6:51 AM
Colour-ring readers jave contributed greatly to the science underpinning 1️⃣0️⃣ years of WaderTales blogs.
One of the best studies, in terms of feedback to observers, is the Sanderling project run by @jeroen-reneerkens.bsky.social.
More here:
wadertales.wordpress.com/2019/10/04/t...
#ornithology
One of the best studies, in terms of feedback to observers, is the Sanderling project run by @jeroen-reneerkens.bsky.social.
More here:
wadertales.wordpress.com/2019/10/04/t...
#ornithology
Reposted by Jeroen Reneerkens
This month, WaderTales will be ten years old.
I'm going to create a thread that highlights some of the research findings that have surprised me.
Plenty of "Wow!" & "I didn't know that!" moments.
Here's a link to the catalogue of 150 blogs
wadertales.wordpress.com/about/
#ornithology
I'm going to create a thread that highlights some of the research findings that have surprised me.
Plenty of "Wow!" & "I didn't know that!" moments.
Here's a link to the catalogue of 150 blogs
wadertales.wordpress.com/about/
#ornithology
September 2, 2025 at 8:31 AM
This month, WaderTales will be ten years old.
I'm going to create a thread that highlights some of the research findings that have surprised me.
Plenty of "Wow!" & "I didn't know that!" moments.
Here's a link to the catalogue of 150 blogs
wadertales.wordpress.com/about/
#ornithology
I'm going to create a thread that highlights some of the research findings that have surprised me.
Plenty of "Wow!" & "I didn't know that!" moments.
Here's a link to the catalogue of 150 blogs
wadertales.wordpress.com/about/
#ornithology
It is juvenile #Sanderling time!
Observers, please share your counts of adults and juveniles with me (j.reneerkens@ecos.au.dk; do not use the address in ageing guide!). I will use them in population models to.
📄 Find the ageing guide here: bit.ly/3HQdb5M
Observers, please share your counts of adults and juveniles with me (j.reneerkens@ecos.au.dk; do not use the address in ageing guide!). I will use them in population models to.
📄 Find the ageing guide here: bit.ly/3HQdb5M
September 8, 2025 at 6:40 AM
It is juvenile #Sanderling time!
Observers, please share your counts of adults and juveniles with me (j.reneerkens@ecos.au.dk; do not use the address in ageing guide!). I will use them in population models to.
📄 Find the ageing guide here: bit.ly/3HQdb5M
Observers, please share your counts of adults and juveniles with me (j.reneerkens@ecos.au.dk; do not use the address in ageing guide!). I will use them in population models to.
📄 Find the ageing guide here: bit.ly/3HQdb5M
Reposted by Jeroen Reneerkens
Sanderling.
Just a few weeks old.
Imagine arriving in St Andrews, from Greenland.
Should you stay?
Or fly to England, Portugal, Mauritania or Namibia?
Where's best?
If only this bird could read:
wadertales.wordpress.com/2019/10/04/t...
#ornithology @jeroen-reneerkens.bsky.social
Just a few weeks old.
Imagine arriving in St Andrews, from Greenland.
Should you stay?
Or fly to England, Portugal, Mauritania or Namibia?
Where's best?
If only this bird could read:
wadertales.wordpress.com/2019/10/04/t...
#ornithology @jeroen-reneerkens.bsky.social
Sanderling on West Sands, St Andrews. #birdingFife #BirdingScotland
September 8, 2025 at 5:54 AM
Sanderling.
Just a few weeks old.
Imagine arriving in St Andrews, from Greenland.
Should you stay?
Or fly to England, Portugal, Mauritania or Namibia?
Where's best?
If only this bird could read:
wadertales.wordpress.com/2019/10/04/t...
#ornithology @jeroen-reneerkens.bsky.social
Just a few weeks old.
Imagine arriving in St Andrews, from Greenland.
Should you stay?
Or fly to England, Portugal, Mauritania or Namibia?
Where's best?
If only this bird could read:
wadertales.wordpress.com/2019/10/04/t...
#ornithology @jeroen-reneerkens.bsky.social
It is juvenile #Sanderling time!
I am very interested in counts of adults and juveniles to be used for population models. Please use the manual and send your counts to j.reneerkens@ecos.au.dk (not to address in ageing guide!).
📄 Download ageing guide: bit.ly/3HQdb5M
I am very interested in counts of adults and juveniles to be used for population models. Please use the manual and send your counts to j.reneerkens@ecos.au.dk (not to address in ageing guide!).
📄 Download ageing guide: bit.ly/3HQdb5M
September 8, 2025 at 6:38 AM
It is juvenile #Sanderling time!
I am very interested in counts of adults and juveniles to be used for population models. Please use the manual and send your counts to j.reneerkens@ecos.au.dk (not to address in ageing guide!).
📄 Download ageing guide: bit.ly/3HQdb5M
I am very interested in counts of adults and juveniles to be used for population models. Please use the manual and send your counts to j.reneerkens@ecos.au.dk (not to address in ageing guide!).
📄 Download ageing guide: bit.ly/3HQdb5M
I recommend the well-illustrated blog post by Alaska Audubon on our recent paper in Global Change Biology led by Eveling Tavera Fernandez and Kirsty Gurney about the effects of climatic variation on timing of nesting in arctic shorebirds.
ak.audubon.org/news/arctic-...
ak.audubon.org/news/arctic-...
Silver Lining for Shorebirds: New Study Shows Arctic Nesting Species Are Cued into Climate Change
Attentive long-distance migrants are following environmental cues better than expected, showing some shorebirds to be surprisingly adaptable.
eur01.safelinks.protection.outlook.com
July 30, 2025 at 9:51 AM
I recommend the well-illustrated blog post by Alaska Audubon on our recent paper in Global Change Biology led by Eveling Tavera Fernandez and Kirsty Gurney about the effects of climatic variation on timing of nesting in arctic shorebirds.
ak.audubon.org/news/arctic-...
ak.audubon.org/news/arctic-...
Shorebird chicks are hatching here in Greenland!
This year, egg predation has been intense, especially on Turnstone clutches, so every successful hatch feels extra special. This Turnstone male brooded its four chicks right next to my phone. A bit too close maybe...
This year, egg predation has been intense, especially on Turnstone clutches, so every successful hatch feels extra special. This Turnstone male brooded its four chicks right next to my phone. A bit too close maybe...
July 4, 2025 at 11:46 PM
Shorebird chicks are hatching here in Greenland!
This year, egg predation has been intense, especially on Turnstone clutches, so every successful hatch feels extra special. This Turnstone male brooded its four chicks right next to my phone. A bit too close maybe...
This year, egg predation has been intense, especially on Turnstone clutches, so every successful hatch feels extra special. This Turnstone male brooded its four chicks right next to my phone. A bit too close maybe...
Reposted by Jeroen Reneerkens
#sanderling copulation is a balance act. It always ends with the male fiercely pecking the neck feathers of the female. I have no clue why.
June 19, 2025 at 11:54 PM
#sanderling copulation is a balance act. It always ends with the male fiercely pecking the neck feathers of the female. I have no clue why.
#sanderling copulation is a balance act. It always ends with the male fiercely pecking the neck feathers of the female. I have no clue why.
June 19, 2025 at 11:54 PM
#sanderling copulation is a balance act. It always ends with the male fiercely pecking the neck feathers of the female. I have no clue why.
Reposted by Jeroen Reneerkens
New PhD position in our group! Join us to study gull foraging ecology at sea using GPS and accelerometry data! You will be working here Amsterdam Movement Ecology group under supervision of @judyshamounb.bsky.social, @rooskentie.bsky.social and me. Apply here werkenbij.uva.nl/en/vacancies...
Vacancy — PhD Position Gull Foraging Ecology in the North Sea - NO-REGRETS Project
Are you passionate about animal movement ecology? Interested in studying gull foraging ecology at sea? Apply for this unique PhD opportunity at the Department of Theoretical and Computational Ecology ...
werkenbij.uva.nl
June 13, 2025 at 10:41 AM
New PhD position in our group! Join us to study gull foraging ecology at sea using GPS and accelerometry data! You will be working here Amsterdam Movement Ecology group under supervision of @judyshamounb.bsky.social, @rooskentie.bsky.social and me. Apply here werkenbij.uva.nl/en/vacancies...
Reposted by Jeroen Reneerkens
Wader sounds: What did you hear?
NEW PERSPECTIVE by Edward H. Miller, Terje Lislevand, and Pavel S. Tomkovich
www.waderstudygroup.org/article/19261/
#waders #shorebirds #ornithology #OpenAccess
NEW PERSPECTIVE by Edward H. Miller, Terje Lislevand, and Pavel S. Tomkovich
www.waderstudygroup.org/article/19261/
#waders #shorebirds #ornithology #OpenAccess
June 8, 2025 at 1:30 PM
Wader sounds: What did you hear?
NEW PERSPECTIVE by Edward H. Miller, Terje Lislevand, and Pavel S. Tomkovich
www.waderstudygroup.org/article/19261/
#waders #shorebirds #ornithology #OpenAccess
NEW PERSPECTIVE by Edward H. Miller, Terje Lislevand, and Pavel S. Tomkovich
www.waderstudygroup.org/article/19261/
#waders #shorebirds #ornithology #OpenAccess
Reposted by Jeroen Reneerkens
Are you joining us in Groningen? This year's conference will be in The Netherlands 🇳🇱 #IWSG2025
Registration closes 30th June
Details here ⬇️
www.waderstudygroup.org/conferences/...
Registration closes 30th June
Details here ⬇️
www.waderstudygroup.org/conferences/...
June 13, 2025 at 7:23 PM
Are you joining us in Groningen? This year's conference will be in The Netherlands 🇳🇱 #IWSG2025
Registration closes 30th June
Details here ⬇️
www.waderstudygroup.org/conferences/...
Registration closes 30th June
Details here ⬇️
www.waderstudygroup.org/conferences/...
In NE Greenland today, I watched a male Sanderling give his all to impress a female-- song and calls, slowmotion dive and nest scraping.
She was not impressed and calmly kept foraging.
#shorebirds never cease to amaze.
She was not impressed and calmly kept foraging.
#shorebirds never cease to amaze.
June 17, 2025 at 11:16 PM
In NE Greenland today, I watched a male Sanderling give his all to impress a female-- song and calls, slowmotion dive and nest scraping.
She was not impressed and calmly kept foraging.
#shorebirds never cease to amaze.
She was not impressed and calmly kept foraging.
#shorebirds never cease to amaze.
Reposted by Jeroen Reneerkens
WAT HEBBEN WE ONZE GROND AANGEDAAN?
Eerder vonden onderzoekers van www.birdeyes.org hoge concentraties #PFAS in levers van #grutto's, vooral in broeders kruidenrijke weilanden (www.sciencedirect.com/science/arti...). Ook eieren blijken rijk bedeeld.
Het schadelijke PFAS zit dus inmiddels overal.
Eerder vonden onderzoekers van www.birdeyes.org hoge concentraties #PFAS in levers van #grutto's, vooral in broeders kruidenrijke weilanden (www.sciencedirect.com/science/arti...). Ook eieren blijken rijk bedeeld.
Het schadelijke PFAS zit dus inmiddels overal.
May 30, 2025 at 8:09 AM
WAT HEBBEN WE ONZE GROND AANGEDAAN?
Eerder vonden onderzoekers van www.birdeyes.org hoge concentraties #PFAS in levers van #grutto's, vooral in broeders kruidenrijke weilanden (www.sciencedirect.com/science/arti...). Ook eieren blijken rijk bedeeld.
Het schadelijke PFAS zit dus inmiddels overal.
Eerder vonden onderzoekers van www.birdeyes.org hoge concentraties #PFAS in levers van #grutto's, vooral in broeders kruidenrijke weilanden (www.sciencedirect.com/science/arti...). Ook eieren blijken rijk bedeeld.
Het schadelijke PFAS zit dus inmiddels overal.
Reposted by Jeroen Reneerkens
Millions of birds nest in the Arctic each year. But did you know they’ve been doing this since the Cretaceous? Can’t believe I finally get to share that our paper on the birds of the Prince Creek Formation is out in @science.org (and on the cover)! 🧵
Art: Gabriel Ugueto @serpenillus.bsky.social
Art: Gabriel Ugueto @serpenillus.bsky.social
May 29, 2025 at 6:19 PM
Millions of birds nest in the Arctic each year. But did you know they’ve been doing this since the Cretaceous? Can’t believe I finally get to share that our paper on the birds of the Prince Creek Formation is out in @science.org (and on the cover)! 🧵
Art: Gabriel Ugueto @serpenillus.bsky.social
Art: Gabriel Ugueto @serpenillus.bsky.social
The best welcome in a new house I ever got....
May 19, 2025 at 8:43 PM
The best welcome in a new house I ever got....
Reposted by Jeroen Reneerkens
Sanderling flocks - passing through!
wadertales.wordpress.com/2019/10/04/t...
Research by @jeroen-reneerkens.bsky.social
#ornithology
wadertales.wordpress.com/2019/10/04/t...
Research by @jeroen-reneerkens.bsky.social
#ornithology
May 15, 2025 at 8:09 PM
Sanderling flocks - passing through!
wadertales.wordpress.com/2019/10/04/t...
Research by @jeroen-reneerkens.bsky.social
#ornithology
wadertales.wordpress.com/2019/10/04/t...
Research by @jeroen-reneerkens.bsky.social
#ornithology
Reposted by Jeroen Reneerkens
Seen a Sanderling recently?
Some of the birds in the UK in May will have left Namibia, flown north along the Atlantic cost and crossed the Sahara.
Long way still to go to get to Greenland!
More here:
wadertales.wordpress.com/2019/10/04/t...
Research: @jeroen-reneerkens.bsky.social
#UKbirding
Some of the birds in the UK in May will have left Namibia, flown north along the Atlantic cost and crossed the Sahara.
Long way still to go to get to Greenland!
More here:
wadertales.wordpress.com/2019/10/04/t...
Research: @jeroen-reneerkens.bsky.social
#UKbirding
May 7, 2025 at 11:55 AM
Seen a Sanderling recently?
Some of the birds in the UK in May will have left Namibia, flown north along the Atlantic cost and crossed the Sahara.
Long way still to go to get to Greenland!
More here:
wadertales.wordpress.com/2019/10/04/t...
Research: @jeroen-reneerkens.bsky.social
#UKbirding
Some of the birds in the UK in May will have left Namibia, flown north along the Atlantic cost and crossed the Sahara.
Long way still to go to get to Greenland!
More here:
wadertales.wordpress.com/2019/10/04/t...
Research: @jeroen-reneerkens.bsky.social
#UKbirding
Reposted by Jeroen Reneerkens
Latest WaderTales blog reviews what we are learning from tracked waders/shorebirds:
wadertales.wordpress.com/2025/05/06/m...
But are researchers making full use of the data that birds collect for them?
#ConservationScience🌍
wadertales.wordpress.com/2025/05/06/m...
But are researchers making full use of the data that birds collect for them?
#ConservationScience🌍
Making full use of tracking data
This blog has two aims – to share some of the important scientific and conservation stories that are being revealed through shorebird tracking work and to encourage scientists to make their data av…
wadertales.wordpress.com
May 6, 2025 at 5:18 PM
Latest WaderTales blog reviews what we are learning from tracked waders/shorebirds:
wadertales.wordpress.com/2025/05/06/m...
But are researchers making full use of the data that birds collect for them?
#ConservationScience🌍
wadertales.wordpress.com/2025/05/06/m...
But are researchers making full use of the data that birds collect for them?
#ConservationScience🌍