Request for observations of our IJmuiden gulls ringed in season 2018
Tag Archives: larus argentatus
Adult Herring Gull Green YCHH with pseudo mirror, Thayeri pattern and suspended primary moult – 20180716
Herring Gull and Lesser Black-backed Gull portraits – May/June 2018
Herring Gull primary pattern comparison – May/June 2018
Primary pattern variation in adult Herring Gull Green YBKC from 2015 to 2018
Suspended primary moult in adult European Herring Gulls Larus argentatus argenteus of the Dutch colony of IJmuiden Forteiland
Uitgestelde handpenrui bij volwassen Zilvermeeuwen Larus argentatus argenteus uit de IJmuiden Forteiland kolonie
Status update over de aanwezigheid van pseudo-spiegels en grijze inkepingen bij adulte Zilvermeeuwen van IJmuiden Forteiland
Mixed breeding pair Herring Gull x Lesser Black-backed Gull in IJmuiden 2017
Gemengd broedpaar Zilvermeeuw x Kleine Mantelmeeuw in IJmuiden 2017
