Thursday, June 10, 2010

Wednesday, June 2, 2010

Black-headed Gull, adult, W[E5HV]
Black-headed Gull, juvenile, W[E5KF]

Black-headed Gulls, juvenile

Black-headed Gull, juvenile, W[E5PA]

Black-headed Gull, juvenile, W[E5LL]

Black-Headed Gull - WHITE [E5JE] / black

Black-headed Gull, adult, W[E5JE]

Photo: Van Kleinwee

Black-headed gull (Chroicocephalus ridibundus), adult
Zoetermeer, The Netherlands, June 2, 2010. White E5JE, M[Arnhem 3693373]. Adult Black-headed gull in full summer (alternate) plumage, being measured and ringed. See also this image of the same individual in full winter (basic) plumage and note the differences in leg and bill color.
(Ring info: ringed June 2, 2010, Zoetermeer, The Netherlands. Age: 3rd calendar year.)

Kokmeeuw (Chroicocephalus ridibundus), adult
Benthuizerplas, Zoetermeer, 2 juni 2010. Wit E5JE, M[Arnhem 3693373]. Adulte Kokmeeuw in volledig zomerkleed, gefotografeerd terwijl het gemeten en geringd wordt. Zie ook deze foto van dit individu in volledig winterkleed en vergelijk het verschil in de poot- en snavelkleur.
(Ringdatum: 2 juni 2010, Zoetermeer. Leeftijd: 3de kalenderjaar.)