Visit to the gull colony of IJmuiden – 20160411

Images and videos taken during our first visit this breeding season to the gull colony of IJmuiden, the Netherlands. The colony is part of a research project and home to about 1,000 pair Lesser Black-backed Gulls, 100 pair Herring Gulls and 4 pair presumed hybrids Lesser Black-backed x Yellow-legged.

Male Lesser Black-backed Gull Green YAAS:

G-YAAS-20160411-1

Male Lesser Black-backed Gull Green YAVM:

G-YAVM-20160411-3 G-YAVM-20160411-2

Male Lesser Black-backed Gull Green YBBJ with much red on the upper mandible:

G-YBBJ-20160411-1

Male Lesser Black-backed Gull Green YBUA:

G-YBUA-20160411-1

Female Lesser Black-backed Gull Green YABJ head-tossing with unringed partner and courtship-feeding by partner:

Male Lesser Black-backed Gull Green YAJZ mating with an unringed partner.

Lesser Black-backed Gull Green YAMZ long-calling:

G-YAMZ-20160411-1

Female Herring Gull Green YBAZ, breeding right among the Lesser Black-backed’s:

G-YBAZ-20160411-1

G-YBAZ-20160411-2

G-YBAZ-20160411-3

Herring Gull Green YBNZ:

G-YBNZ-20160411-2

Herring Gull Green YBRB:

G-YBRB-20160411

Presumed hybrid Lesser Black-backed Gull x Yellow-legged Gull Green YAHH with new partner Lesser Black-backed Gull:

G-YAHH-20160411-1

G-YAHH-20160411-4

G-YAHH-20160411-5

Presumed hybrid Lesser Black-backed Gull x Yellow-legged Gull Green YBAM with partner Lesser Black-backed Gull:

G-YBAM-20160411-2

G-YBAM-20160411-1

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