Tessera

Folgen

Hans Linssen

@hanslinssen.bsky.social

Postdoc at NIOZ tracking red knot migration

1 Posts79 Follower 106 Folgt

North Ronaldsay Bird Observatory @northronbirdobs.bsky.social · 3mo ago

The newly ploughed observatory crop has played host to a colour-ringed Knot in the past few days. Initially seen in poor weather and post submission we discovered it’s also carrying a geo-locator from @globalflyway.bsky.social you can follow Arenicola’s progress on the globalflyways network website

Tohar Tal @tohar-tal.bsky.social · 3mo ago

Why are Bewick’s Swans declining? Here, we set out to answer this question by breaking down the reproductive cycle of the rapidly declining Western Palearctic population, using both GPS/ACC and citizen-science data. Click the link below to read the full story! @hanslinssen.bsky.social

British Ornithologists’ Union (BOU)@bou.org.uk · 4mo ago

EARLY VIEW in IBIS Low breeding propensity in a declining Arctic-breeding swan revealed by telemetry data | onlinelibrary.wiley.... Tohar Tal, Bart A. Nolet, Tom S.L. Versluijs, Judy Z. Shamoun-Baranes, Götz Eichhorn, Sabine Urban, Hans Linssen | #ornithology 🪶

Freddie Mckendrick @freddiemckendrick.bsky.social · 6mo ago

24 knots now released and slowly spreading around the Wadden sea and beyond. Our UK bird has now moved down to Walton-on-the-Naze and seems settled down for now! #movementecology #ornithology #ukbirding @allertbijleveld.bsky.social @hanslinssen.bsky.social

Freddie Mckendrick @freddiemckendrick.bsky.social · 6mo ago

Red knot GPS tagging expedition on Griend off to a flying start (sorry). 6 birds released with 24 more to go. Most are hanging around in the Wadden sea but one left for the UK with strong tailwinds last night! #MovementEcology #ornithology @allertbijleveld.bsky.social @niozsearesearch.bsky.social

Tracks of red knots moving around the Wadden sea

Track of one individual red knot flying from the Netherlands to the East coast of the UK

Track of one individual red knot arriving in the UK to Thorpeness

NL Institute of Ecology NIOO-KNAW @niooknaw.bsky.social · last yr.

New publication: Migratory Birds Advance Spring Arrival and Egg-Laying in the Arctic, Mostly by Travelling Faster, by @hanslinssen.bsky.social and others. #climatechange #avianmigration #seabirds #waterfowl #articecosystems doi.org/10.1111/gcb....

Figure 1 in Lameris et al. (2025): "Wintering centroids (median positions) of individual birds per year, general migration routes and study sites in the Arctic. Dots, squares and diamonds show wintering centroids and inverted triangles show study sites, with in (a) sanderlings breeding at Zackenberg (pink) and red-necked phalaropes breeding at Ammarnäs (light blue) and Slettnes (yellow), (b) Arctic skuas (dots) breeding at Kongsfjorden (red) and Slettnes (yellow), long-tailed skuas (squares) breeding at Ammarnäs (light blue) and rough-legged buzzards breeding at Kolguev Island (green dots), and (c) barnacle geese (green diamonds) and greater white-fronted geese (green dots) breeding on Kolguev Island, barnacle geese breeding in Kongsfjorden (red diamonds), pink-footed geese breeding in Adventdalen (dark blue dots) and tundra swans breeding at the Malozemelskaya tundra (orange dots). Broad migration routes are indicated with dotted lines and colours similar to the study sites and wintering centroids. In (c), barnacle geese breeding on Kolguev Island follow the northern green route while greater white-fronted geese use the entire green route. The dotted line indicates the Arctic circle. Photos by Tim Sudlow (tundra swan), Nick Goodrum (pink-footed goose), Jasper Koster (barnacle goose), Nick Athanas (sanderling, greater white-fronted goose), John Quine (Arctic skua), Matti Suopajärvi (rough-legged buzzard) and Alaska Region U.S. Fish & Wildlife Service (red-necked phalarope, long-tailed skua). Map tiles by Stamen Design, under CC BY 4.0. Data by OpenStreetMap, under ODbL"

BirdGuides @birdguides.bsky.social · last yr.

Ireland looks set to suffer its first blank winter for Bewick's Swan in recent memory, with no confirmed sightings in the country so far this season:

Blank winter for Bewick's Swan in Ireland

Ireland looks set to suffer its first blank winter for Bewick's Swan in recent memory, with no confirmed sightings in the country so far during winter 2024-25. Although once a fairly numerous winter visitor to Ireland, Bewick's Swan has become increasingly scarce in recent years, with only a handful...

bit.ly