Black-headed gull (Chroicocephalus ridibundus) – Castlewellan, Northern IrelandDespite th
Black-headed gull (Chroicocephalus ridibundus) – Castlewellan, Northern IrelandDespite their name, black-headed gulls spend much of the year lacking the signature dark head of feathers; but they can still be identified by the dark patch behind the eye and the stark orange-red legs and beak. -- source link
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