Tag Archives: larus argentatus

Visit to the gull colony of IJmuiden – 20190315

Great Black-backed Gulls and Herring Gulls – 20190215-16

Individual gulls observed in multiple countries

IJmuiden Forteiland gull season 2018

1CY Leucistic European Herring Gull, brown aberration – September 2018

The ones that that didn’t make it- IJmuiden breeding season 2018

Comparison of underwing primary patterns in Dutch adult Herring Gulls and Lesser Black-backed Gulls – May/June 2018

Request for observations of our IJmuiden gulls ringed in season 2018

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