Black-headed Gull (Larus ridibundus)

Black-headed Gull (Larus ridibundus)

Observation - Black-headed Gull (Larus ridibundus). Description: This bird was one of 4 which appeared to have very dark legs and beak. Is this normal they are usually more crimson than this

This bird was one of 4 which appeared to have very dark legs and beak. Is this normal they are usually more crimson than this