trevrob's picture

Great black backed gull ?

Observed: 23rd February 2013 By: trevrobtrevrob’s reputation in Birdstrevrob’s reputation in Birdstrevrob’s reputation in Birds
great black backed gull ?

not sure if this is a great black backed gull or a herring gull?

Species interactions

No interactions present.

Species with which Lesser Black-backed Gull (Larus fuscus) interacts


jerebarker's picture

The pattern of white

on the wing-tip (the 'mirrors' in the primaries) is also very useful in flight. Great usually show no black band across the outer or outer two primaries, lending a much whiter look to the wing-tip in flight.