Lesser Black-backed Gull Green YCWU: from chick to juvenile

IJmuiden juvenile Lesser Black-backed Gulls fitted with GPS loggers – 20190717

Lesser Black-backed Gull Green YASV trip to France – 20190707

Juvenile Lesser Black-backed Gulls from the IJmuiden Forteiland colony fitted with GPS-loggers – 20190708

Suspended primary moult in adult European Herring Gulls – 20190617

IJmuiden Lesser Black-backed Gulls fitted with GPS loggers – Update June 2019

Progression in Lesser Black-backed Gull chick growth – 20190614

4cy European Herring Gull Green YCDZ – May/June 2019

Adult European Herring Gull Green YCUZ with Thayeri-pattern on P9 and P10 – 20190703

Lesser Black-backed Gull chicks – 20190603