Saturday, July 13, 2019

American Coot

The red bump at the top of an American Coot’s bill is called the callus. Almost all North American coots, like this one we photographed on Olympia’s Capital Lake on 27 June 2019, sport a reddish callus. Only rarely is the callus white or yellowish. In the eastern Caribbean, however, most coot calluses are white. Other than that, most North American coots are similar, although recent studis suggest that western birds may have smaller frontal sheilds on their bills (Brisbin and Mobray 2002).

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