1st.winter
Slaty-backed Gull
Larus schistisagus
Choshi Chiba Japan
February 10th. 2001
IIZOJζPρ~H 2001N210ϊ
ηt§ΆqsΆq`
Tail band is broader than vegae on average,
but it is variable.
A pattern of upperparts of another individual .
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