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.
- 9 жыл бұрын
BTO Bird ID - Adult black-backed gulls
- Рет қаралды 43,706
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