Dark adult
Kamtchatka
Gull? Larus canus kamtschatschensis?
Abashiri
Hokkaido Japan, December 14th 2000. Photos
by Yoshiaki Watanabe 
A dark adult in center, with 2 normal
Kamtchatka Gulls.
Such dark adult 'Common Gulls' (often
similar in mantle tones to Black-tailed Gulls) that are found in small
number in Japan were supposed to be possible race heinei,
according to Grant "Gulls" 1986. But the idea seems getting doubtful, according
to recent literature.
Another
similar example at Tamagawa-river,
Kawasaki kanagawa
Japan, on January 5th 2000
Photo by Osao
Ujihara
back
