Slaty-backed Gull
Fig 1) The "string of pearls" is most obvious from the underside. January 30, 1984, off Hokkaido, Japan. Photo courtesy of Jack Bowling.
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adult cycle Slaty-backed Gull |
Fig 1) The "string of pearls" is most obvious from the underside. January 30, 1984, off Hokkaido, Japan. Photo courtesy of Jack Bowling. |
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Fig 2) The "string of pearls" formed by the white tongue-tips are much harder to see on this moulting bird. December 6, 1983, approaching Tokyo Bay from NE. Photo courtesy of Jack Bowling. |