Jeroen Reneerkens
@jeroen-reneerkens.bsky.social
Shorebird ecologist | #Sanderling | Avian migration | Greenland | Arctic | climate change | #ornithology |#shorebirds | #BirdMigration
Map shows all out-of-Netherlands sightings of Wadden Sea colour-ringed Sanderlings (locations within 5 km merged; dot size = number of birds). The Israel point stands out clearly as an outlier.
September 25, 2025 at 9:47 AM
Map shows all out-of-Netherlands sightings of Wadden Sea colour-ringed Sanderlings (locations within 5 km merged; dot size = number of birds). The Israel point stands out clearly as an outlier.
16 Sept (midday): Tracking shows the bird using mudflats near Griend, then moving SW, leaving the Wadden Sea in the SW corner—before turning SE. A sharp course change away from the coast. #Migration
September 25, 2025 at 9:47 AM
16 Sept (midday): Tracking shows the bird using mudflats near Griend, then moving SW, leaving the Wadden Sea in the SW corner—before turning SE. A sharp course change away from the coast. #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
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...
#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.
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.
Mom was watching us eating our dinner earlier this evening
May 19, 2025 at 8:43 PM
Mom was watching us eating our dinner earlier this evening
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....
Exciting personal news! 🎉 From March 1st, I'll start as a tenure-track researcher in Arctic avian ecology at Aarhus University. 🐦❄️ I’ll continue my fieldwork in @zackenberg.bsky.social Greenland and embark on new adventures in Svalbard. Can’t wait to get started! #ArcticEcology #ornithology
February 4, 2025 at 4:21 PM
Exciting personal news! 🎉 From March 1st, I'll start as a tenure-track researcher in Arctic avian ecology at Aarhus University. 🐦❄️ I’ll continue my fieldwork in @zackenberg.bsky.social Greenland and embark on new adventures in Svalbard. Can’t wait to get started! #ArcticEcology #ornithology
New impulses for the monitoring of migratory waterbirds along the East Atlantic Flyway flyway.waddensea-worldheritage.org/innovations-...
January 15, 2025 at 9:36 AM
New impulses for the monitoring of migratory waterbirds along the East Atlantic Flyway flyway.waddensea-worldheritage.org/innovations-...
Diet study of #arctic #shorebird chicks from #Greenland @zackenberg.bsky.social using DNA barcoding.
Diptera are an important component of Arctic
shorebird chick diets in NE Greenland.
Diptera are an important component of Arctic
shorebird chick diets in NE Greenland.
January 14, 2025 at 1:54 PM
Diet study of #arctic #shorebird chicks from #Greenland @zackenberg.bsky.social using DNA barcoding.
Diptera are an important component of Arctic
shorebird chick diets in NE Greenland.
Diptera are an important component of Arctic
shorebird chick diets in NE Greenland.
Our paper, lead by Tom Versluijs, in @peerj.bsky.social on site-specific length-biomass relationships of #arctic #artrhopod families is now included in the Arctic Frontiers Hub (to be officially launched in January 2025) by the journal peerj.com/hubs/arcticf...
December 20, 2024 at 10:20 AM
Our paper, lead by Tom Versluijs, in @peerj.bsky.social on site-specific length-biomass relationships of #arctic #artrhopod families is now included in the Arctic Frontiers Hub (to be officially launched in January 2025) by the journal peerj.com/hubs/arcticf...