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

Some random images of Great Black-backed Gulls and Herring Gulls taken at IJmuiden, the Netherlands on 15 and 16 February 2019.

Great Black-backed Gulls

A second-calendar year and an adult.

Herring Gulls

Male Green YBDS from our IJmuiden Forteiland project.

Female Green YBUK from our IJmuiden Forteiland project.

Second-caledar year Scandinavian Herring Gull,(L. a. argentatus). Note the lack of moult in mid-February.

Some unringed adults:

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