Mottled Duck
Anas fulvigula
The Mottled Duck (Anas fulvigula) occurs in the southeast United States as well as the Gulf coast of parts of Mexico. It is superficially similar to a female Mallard but has a different speculum, bill color, and darker plumage overall. The Mottled Duck shown here was at Port Bolivar, Galveston Co., Texas, in March, 2001, and was photographed with a Canon EOS 3 and EF 600mm F/4 L lens on Fuji Sensia. For a few comments about separating this species from American Black Duck, you may find this page of interest.
The Mottled Duck shown here was at South Padre Island, Cameron Co., Texas, in May, 2010.