Northern PintailAnas acuta
Male, 25-29" (64-74 cm); female, 21-23" (53-58 cm). Long-necked slender duck. Male has brown head, white underparts and neck with white line extending onto side of head, grayish back and sides, and long, black, pointed central tail feathers. Speculum metallic brown and green with white rear border that shows in flight. Feet gray. Female mottled brown, similar to female Mallard, but paler, grayer, and more slender, with brown speculum bordered with white at rear edge only; tail is more pointed than in female Mallard.