Mexican Duck
Anas diazi
The bird has a length of 45–55 cm (17.7–21.6 in) and a weight of 849–1,243 g (1.872–2.740 lb) The Mexican duck is mainly brown, with a blue speculum edged with white, obvious in flight or at rest. The male has a brighter yellow bill than the female.
ID text from Wikipedia, CC BY-SA 4.0
White-cheeked Pintail
Anas bahamensis
Like many southern ducks, the sexes are similar, though females are slightly smaller and duller in plumage. It is mainly brown with white cheeks and a red-based grey bill; juveniles have duller bill. The wing has an iridescent green speculum. Like the other pintails, it has a slender, acutely pointed tail, though not so marked as in the northern pintail A. acuta. It cannot be confused with any other duck in its range.
ID text from Wikipedia, CC BY-SA 4.0
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