Tag Archives: larus argentatus

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

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

Eye close-ups of adult Herring Gulls and Lesser Black-backed Gulls – 20200529

Visit to the gull colony of IJmuiden – 20200511

Visit to the gull colony of IJmuiden – 20200316

Visits to the gull colony of IJmuiden May – July 2019

How to score primary moult in gulls

Mixed breeding pair article pubished in Limosa 92.2

Final visit to the IJmuiden Forteiland colony this season – 21090826

Suspended primary moult in adult European Herring Gulls – 20190617