Thayer's Gull (thayeri)
(last update: January 22, 2013)
Glaucous x Vega Gull hyperboreus x vegae (?) adult, February 02 2010, Choshi, Japan. Picture: Gullog.
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Much like a pale Herring Gull, but with obviously pigmented primaries (much reduced black on underside of P10). Could also be hybrid with American Herring Gull smithsonianus?
