This section is from the book "Bird Guide: Water Birds, Game Birds And Birds Of Prey East Of The Rockies", by Chester A. Reed. Also available from Amazon: The Bird Book.
134. Anas fulvigula. 21 in.
Much lighter than the Black Duck, all the feathers being broadly margined with buffy; throat nearly clear buffy without markings. The habits of this species, which is restricted to Florida and the Gulf coast to Louisiana, are the same as those of the northern Black Duck.
Notes. - Precisely like those of the Mallard.
Nest. - Of grass and down, on the ground, the eggs being like those of the Black Duck but averaging a trifle smaller (2.15x1.50); April.
Range. - Florida and the Gulf coast to La.; resident. 134a., Mottled Duck (A. f. maculosa), is very similar to the Florida species, but is mottled with black on the belly, instead of streaked. It is found on the coast of Texas and north to Kansas.

 
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