Wikipedia:POTD column/November 8, 2006

A female Mallard and ducklings. Mallards are probably the best-known of all ducks. The breeding male is unmistakable, with a green head, black rear end and blue speculum feathers edged with white. The female Mallard is light brown and can be distinguished from other ducks, by the distinctive speculum.

Photo credit: Alan D. Wilson/Fir0002
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