![Black-headed Gull, adult, W[LEK]](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_tjCpfVNvEfFEhywK6QB8zy_8rntVzi5vlwBPfE-Bs2cVVH-1znoU_6MgCW0cv6rdzA2XBYS1dnS00kjKs6X4oV_1CFu3ir6mNSAqr_CmexU10XbVG4ZKbD-4bAY4_K1Kk=s0-d)
Photo: by Van Kleinwee.
Black-headed gull (Chroicocephalus ridibundus), adult
Leiden, Groenewoudsesingel, The Netherlands, November 25, 2010. W[LEK] (Stockholm 6178292). Adult Black-headed gull, in full winter (basic) plumage. Another individual from abroad, returning to spend the winter in Leiden at the same location as before. See these photos taken last winter.
(Ring info: metal ring added April 3, 1999, Malmö, Sweden. Sex: male. Age: unknown, after 2nd calendar year. Color ring added January 10, 2006, Leiden, The Netherlands.)
Kokmeeuw (Chroicocephalus ridibundus), adult
Groenewoudsesingel, Leiden, 25 november 2010. W[LEK] (Stockholm 6178292). Adulte Kokmeeuw in volledig winterkleed, terug om de winter in Leiden door te brengen. Zie deze set foto's van afgelopen winter.
(Ringinfo: metalen ring toegevoegd 3 april 1999, Malmö, Zweden. Kleurring toegevoegd op 10 januari 2006, Leiden. Sex: man. Leeftijd: onbekend, na 2de kalenderjaar.)
