The
trailing legs and rounded wings of these slow flying
ducks makes them look bigger than they are.
Both species are primarily Mexican. In the U. S.,
the black-bellied is found only in south Texas and
Louisiana. The fulvous also occurs there and in Florida
with occasional stragglers further north along both
coasts and the Mississippi Valley. The fulvous is
the more common of the two species in the United States.
Sexes are alike. Both species have shrill whistling
calls.
