Visit to the gull colony of IJmuiden – 20190423

Images taken during a visit to the gull colony of IJmuiden Forteiland, the Netherlands, on April 23, 2019, as part of our research project.

Shown are European Herring Gulls, Lesser Black-backed Gulls, and hybrids.

Click for a larger image.

European Herring Gulls

Male YACB

Now in its 20th calendar year.

Male YBBZ

Male YBKL

Male YBPT

Male YBRD

With partner YBUW:

Female YBUW

Male YCAP

Male YCBC

Male YCKP

Lesser Black-backed Gulls

Black/Blue 3P

Born in the Rotterdam Maasvlakte colony but settling in IJmuiden.

Male YAKU

With a messy plumage and a tertial spot. He is older than 14 calendar years.

Female YASV

Male YATJ

Male YBTM

Male YBUX

Back from spending the winter in Morocco.

YBZA

Female YCNH

Male YCPC

(Presumed) Hybrid Lesser Black-backed Gull x Yellow-legged Gull

Male YBAM

With partner Lesser Black-backed Gull YCPL:

Male YBVA

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