American Herring Gull (smithsonianus)(last update: October 30, 2015) |
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American Herring Gull (smithsonianus) adult, February 24 2008, St. John's, Newfoundland, Canada. Picture: Bruce Mactavish.Tongue on P10 >1/2 length of the visible feather, in combination with full sub-terminal black band. Medial band on P10 smaller than mirror on p10. Mirror on P9 on both webs.
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