Gulls in NW Europe

(last update: September 25, 2011 )

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Lesser Black-backed Gull adult (graellsii) Y.AKZ 2010 & 2011, the Netherlands. Pictures: Pim Wolf & Ruud Altenburg.

Bird ringed as breeding adult on the nest on 25 May 2009 at IJmuiden, the Netherlands.

Lesser Black-backed Gull adult (graellsii) Y.AKZ September 09 2010, IJmuiden, the Netherlands. Picture: Arno Piek.

P7-P10 old.

Lesser Black-backed Gull adult (graellsii) Y.AKZ October 30 2010, IJmuiden, the Netherlands. Picture: Sander Haak.

P7 fully grown; P10 old.

Lesser Black-backed Gull adult (graellsii) Y.AKZ November 05 2010, Westkapelle, the Netherlands. Picture: Pim Wolf.

P7 fully grown; P10 old.

Lesser Black-backed Gull adult (graellsii) Y.AKZ September 30 2011, Heemskerk, the Netherlands. Picture: Ruud Altenburg.

P6 fully grown.

Life history for Y.AKZ

Year
Month
Day
 Location   Lat Long
2009
May
25
 IJmuiden, Forteiland NL 52,46 4,57
<<< 18 observations in between >>>
2009
November
6
 IJmuiden, strand NL 52,44 4,55
2009
December
13
 Colmenar Viejo, Vertedero, Madrid, landfill site ESP 40,65 -3,77
2010
March
20
 IJmuiden, Forteiland NL 52,46 4,57
<<< 40 observations in between >>>
2010
November
5
 Westkapelle NL 51,53 3,43
2010
December
4
 Colmenar Viejo, Vertedero, Madrid, landfill site ESP 40,65 -3,77
2010
December
11
 Colmenar Viejo, Vertedero, Madrid, landfill site ESP 40,65 -3,77
2010
December
12
 Colmenar Viejo, Vertedero, Madrid, landfill site ESP 40,65 -3,77
2011
January
9
 Colmenar Viejo, Vertedero, Madrid, landfill site ESP 40,65 -3,77
2011
April
11
 IJmuiden, Forteiland NL 52,46 4,57
<<< 37 observations in between >>>
2011
9
30
 Heemskerk; Strand paal 48 NL 52,52 4,59

Very interesting migration pattern. Apparently, Y.AKZ chooses to stay in the Netherlands well into November, and it flies to Spain only for the winter months December - March. Late March it can be back again.