Lesser Black-backed Gulls in the IJmuiden colony – 2015 breeding season

Images of Lesser Black-backed Gulls Larus fuscus graellsii (Dutch intergrade), taken during the breeding season of 2015 (from mid-April to early July).

All ringed birds have been ringed in the colony unless stated otherwise.

G-YATA-YBCA-20150420
Female Green YATA (front left) next to male partner Green YBCA. 20 April 2015.

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Female Green YBCJ with resting gulls in the background. 20 April 2015.

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Female Green YBJD flying over the colony. 27 April 2015.

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Unknown adult on a rather large nest. 11 May 2015.

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Female Green YAJY stepping onto her nest. 11 May 2015.

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Green YBJB about to sit down on 3 eggs. 11 May 2015.

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During the beginning of the breeding season a few adults were found dead. Cause of death probably heart failure. 11 May 2015.

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Male Green YBHW. 27 April 2015.

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Male Green YAVM with allmost fully white tips on P10. 13 April 2015.

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Male Green YAJT landing while giving the landing call. 6 July 2015.

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Female Green YACN. 27 April 2015.

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Female Green YAJJ. Note the lack of black on P7 in the right wing. 11 May 2015.

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4th-calendar year Green YBFD. 29 May 2105.

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Female Green YBNV. 26 May 2105.

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Female Green YAJY. 27 April 2015.

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Green YAJZ. 29 June 2015.

G-YARY-20150622-4
Yes: we’re Dutch! Green YARY. 22 June 2015.

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5th-calendar year Green YAWZ. 6 July 2015.

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Male Green YBJW. 20 april 2015.

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A striking individual with many leucistic feathers. 27 April 2015.

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Male Green YAAU with young chick. 15 June 2015.

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Male Green YBCU with 2 young chicks. 29 June 2015.

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White N07R with 3 large young. It is one of 2 breeding Lesser Black-backed Gulls that are fitted with a Spanish Ring. 29 June 2015.

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Green YBWC in full juvenile plumage. The outer primaries still need grow to full length. 6 July 2015.

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Green YBXS in full juvenile plumage. The outer primaries still need grow to full length. 6 July 2015.

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Juvenile Green YBZP with brother or sister. 6 July 2015.

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Female Green YABU with juvenile. 6 July 2015.

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