| Adult winter
Thayer's GullLarus thayeri
Choshi Chiba Japan, January 14th 2002 |
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This is one of
the old-timers of Thayer's gull in Choshi.
It was found for the first time in 1987. *The
FIRST SHOT of this individual, December 1987 |
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This has the smallest bill among the old-timers, so this may be a female. |
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Compare its head structure, bill size, and head streaking with the Vega Gull. |
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Its hooded head and pale mantle are distinct among Vega Gulls in flight. |
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And also, the wings look long against the small head/bill |