of the United States. 
383 
Female very different from the male. 
Feed on tender aquatic plants, chiefly seeds and grains, also 
on spawn, fry, and other aquatic animals. 
323. Anas boschas, L. Mirror violet, bounded with black and 
white ; rump blackish, tail of twenty feathers. 
Male, head and neck green ; a white collar ; middle tail- 
feathers recurved. 
Female and young wholly brownish, varied with yellowish 
and blackish. 
The Mallard , Anas boschas , Wils. Am. Orn. viii. p. 112 . 
pi. 70. fig. 7. 
Inhabits the north of both continents, advancing far to the 
south in its periodical journeys : common during winter 
throughout the United States where a few breed. 
324. Anas strepera, L. Mirror white, bordered by black 
and chesnut ; feet orange, webs blackish ; tail of sixteen 
feathers. 
Male blackish waved with white ; rump black. 
Female duller, rump uniform with the rest. 
The Gadwall , Anas strepera , Wils , Am. Orn. viii. p. i£0. 
pi. 71 .fig. 1. 
Inhabits the north of both continents, whence it migrates in 
winter : rather rare in the United States. 
325. Anas acuta, L. Mirror green, margined with black 
and white, above with rusty ; tail very long, cuneiform, 
acute, of sixteen feathers ; bill very long, linear, slate color. 
Male light ash, a white stripe each side of the neck; two 
middle tail feathers greatly elongated, tapering ; vent black. 
Female dusky, speckled with white; speculum and vent 
uniform with the rest; middle tail feathers not elongated. 
Pintail Dusk , Anas acuta , Wils. Am Orn. viii. p. 72 . 
pi, 6%. jig. 2. 
Inhabits the north of both continents, migrating far to the 
