Author Archives: Maarten van Kleinwee

IJmuiden Lesser Black-backed Gull GPS-project update: wintering locations and migration routes 2020 – 2021

Hybrid Lesser Black-backed Gull Green YCLD: from chick to breeding adult

Visits to IJmuiden Forteiland gull colony – April 2021

Lesser Black-backed Gull Green YBJB with black on all primaries, sometimes – 2021 update

5CY Herring Gull YCKL with sub-adult plumage – 20210412

Marked Birds Database – Version 2.13.0 available

First visit to IJmuiden Forteiland colony of 2021 season and returning birds with GPS loggers

IJmuiden Gull Research Team season 2020 review

Marked Birds Database – Version 2.12.0 available

Filming Lesser-Blacked Gull YDDD in flight and matching it with its GPS data