Black-headed Gull
Chroicocephalus ridibundus · Lifer #48
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Photos: 3 Forms: 2 (Juvenile, Non-breeding)
CZ-PRIE-LIS-1
Monotypic. Plumage varies, breeding has black head while non-breeding is white-grey with a darker/blackish spot by the "ear". Juvenile is different over first two years. M/F similar.