andylaw's picture

Immature Greater Black backed Gull

Observed: 7th October 2011 By: andylawandylaw’s reputation in Birdsandylaw’s reputation in Birdsandylaw’s reputation in Birds
Species interactions

No interactions present.


RoyW's picture

GB-b Gull

GB-b Gull does have a pale "window" in the inner primaries, but it is not usually very distinct - and appears much as seen in this photo.

Other ID clues are the very heavy bill, relatively indistinct dark tail band, and coarsely marked upperparts.

Andy: Try and remember to add the scientific name when you post an ID (if you click on "get recommended" after entering the English name it will be done automatically in most cases). The scientific name is what Ispot uses to link to other observations of the same species.

Carstairs's picture


GBBG also usually shows slight yellow at base of bill even in first winter birds.

RoyW's picture

Bill colour

GB-b Gulls frequently do have a paler base to the bill from their first winter, but this is not always the case. Some will have all black bills until at least their first summer - and in many others the paler base would not be vsible in a photo like this one.