Our future - in your hands

We need to find the surveyors of the future. With your help we can provide resources to educate, engage and empower.

Learn more

Identifying adult black-backed gulls

On paper Lesser and Great Black-backed Gulls are straightforward to separate but, in reality, many of us struggle - especially as the light conditions can alter their colour and size is not always apparent. Watch our video to tell these two species apart, as well as differentiate them from Herring Gull.

BTO bird identification videos are supported by Natureguides

Natureguides kindly provide species video clips for our bird identification videos.



Related content