Lesser Black-backed Gull (graellsii) 4cy K.LAX July 25 2010, Kelderhuispolder - Texel, the Netherlands. Picture: Maarten van Kleinwee.
Ringed as pullus on July 16 2007 at Kelderhuispolder - Texel, The Netherlands. Sex: unknown.
below: 4cy K.LAX July 25 2010, Kelderhuispolder - Texel, the Netherlands. Picture: Maarten van Kleinwee.
Almost inseparable from adults by its adult-looking mantle and wing coverts. Only with unfolded wing could some brown immature feathers be seen. (Compare with this more regular looking 4th-calendar year individual.) Note small mirror, when compared to 6cy plumage below.
below: 5cy K.LAX June 24 2011, Kelderhuispolder - Texel, the Netherlands. Picture: Maarten van Kleinwee.
below: 6cy KLAX October 21 2012, Landfill VRSU de Colmenar Viejo, Madrid, Spain. Picture: Delfín González.
P7/P10.
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