Great Black-backed Gulls have a much deeper blunter tipped bill than the Herring Gulls, it gives the impression of a short bill because of the thickness, see images below for comparison. Lesser Black-backed is similar to Herring but on average less pronounced gonydeal angle on the bill.
ABOVE: Great Black-backed Gull
BELOW: Herring Gull
cheers, John
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Take only photographs, leave only footprints.......................................
For wildlife information in the Clyde Recording Area see ...
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