Monthly Archives: July 2016

Black-legged Kittiwakes, Boulogne-sur-Mer, France, 20160728

Herring Gull Green YBAJ at Amsterdam Schiphol Airport – 20160722

2CY Lesser Black-backed Gulls YBWU and YBZC – 2015 and 2016

Adult Herring Gull Green YBRB – 20160704

6CY leucistic Lesser Black-backed Gull Green Y.AXL – May/July 2016

Progression in feather growth in young Herring Gull Green YCDM

Identifying nearly-fledged Herring Gulls and Lesser Black-backed Gulls in the field