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first cycle Slaty-backed Gull
October
Photos A thru G: Oct, 2010. Choshi, Japan. Photos by Clive Harris.
A


B


C


D


E


F

G

December
Dec, 1999. Japan. Photo by Wataru Kojima.
This bird may be a Glaucous x ?.

January
Photos A thru G: Jan 24, 2010. Rausu/Nemuro, Hokkaido, Japan. Photos by Jim Holmes.
A


B

C


D

E


F

G

February
Photos A thru C: Feb, 2010. Choshi, Japan. Photos by Clive Harris.
A


B

C

Specimen photos are from the Burke Museum, University of Washington. Photos by Steve Hampton.

Male. Oct 5, 1993. Stekol'nyy, 5km NE along Khasyn River, Russia. 60 04'N, 150 47'E. Specimen 51644.




Female. Oct 5, 1993. Stekol'nyy, 5km NE along Khasyn River, Russia. 60 04'N, 150 47'E. Specimen 51644 (but different bird from above).


Female. Oct 1, 1993. Arman', mouth of Shirokaya River, Russia. 59 46'N, 150 04'E. Specimen 51645.

For comparison of upper and underwing surfaces in flight, see these illustrations.

See this page to compare with Glaucous-winged x Herring hybrids