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Black Headed Gull, Becoming Black Headed

Observed: 5th February 2013 By: Simon WalkerSimon Walker’s reputation in BirdsSimon Walker’s reputation in BirdsSimon Walker’s reputation in BirdsSimon Walker’s reputation in BirdsSimon Walker’s reputation in Birds
Black Headed Gull, becoming black headed, Grafham Water, 2013-02-04 001
Black Headed Gulls, in various degrees of black headedness, Grafham Water, 2013-02-04 002
Description:

These gulls seem to be showing signs of switching to their summer colours.
Bit of a dull day most of the time.

Identifications
Species interactions

No interactions present.