Herring Gull Photo Index
Herring Gull Larus argentatus
Northern argentatus with extensive white in primaries ('thayeri' type), Staffs, Dec 2003
Photo Gallery Index
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Herring Gull Photo Index |
Herring Gull Larus argentatusNorthern argentatus with extensive white in primaries ('thayeri' type), Staffs, Dec 2003 |
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© A. R. Dean
Nominate race Herring Gulls from northern Scandinavia display more extensive white in the primaries and a proportion have white on the inner web of p9 and/or p10 conjoined with the white mirror near the tip - the so-called 'thayeri-pattern'. This individual is an extreme example.
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