| Adult
winter Thayer's Gull Larus
thayeri
Choshi Chiba Japan, December 17th 2001 |
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 |
 |
 |
 |
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| under wing ( Feb. 19 2000 ) upper wing ( Dec. 25 1999 ) |
| Adult
winter Thayer's Gull Larus
thayeri
Choshi Chiba Japan, December 17th 2001 |
|
|
|
|
|
|
| under wing ( Feb. 19 2000 ) upper wing ( Dec. 25 1999 ) |