Herring Gulls adult 17 Jan
Larus argentatus


Photographer

Dick Newell

Date

17th January 02

Location

Milton, Cambs.

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The first bird here is a fairly normal argenteus or argentatus Herring Gull with yellowish legs.
The second bird could be mistaken for a michahellis, but it is too dark even for that, the primaries are far too short and one might expect some red in the gape with a bill this lurid. Either this is an "omissus" type, but I think more likely a hybrid Herring x Lesser Black-backed Gull. Note the very broad white tertial fringe, a known characteristic of hybrids (per Peter Adriaens).


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