Aythya affinis (Eyton). Lesser Scaup Duck. Common during migration. Davis (1935b:235) lists this bird as a regular winter visitant in Minidoka County from October 30 to May 31.
Glaucionetta clangula americana (Bonaparte). American Golden-eye. Common resident. (D. A. 1476, Bellevue, Blaine County, June 28, 1939.)
Glaucionetta islandica (Gmelin). Barrow Golden-eye. Uncommon transient. Davis (1935b:234) records one specimen taken at the Minidoka Project.
Glaucionetta albeola (Linnaeus). Buffle-head. Common migrant. (D. A. 1852, Snake River, 1 mi. S Hammett, Elmore County, November 15, 1941.)
Histrionicus histrionicus pacificus Brooks. Western Harlequin Duck. Uncommon. Rust (1915:122) records one specimen taken on the marshes of the St. Joseph River in Kootenai County, and Merrill (1897:350) states that it is occasionally taken on the St. Joseph and Coeur d'Alene rivers.
Melanitta fusca subsp.?. White-winged Scoter. Rust (1915:122) records this bird as common on Lake Coeur d'Alene in the winter of 1913.
Melanitta perspicillata (Linnaeus). Surf Scoter. Rust (1915:122) states that this is a rare fall migrant in Kootenai County.
Oxyura jamaicensis rubida (Wilson). Ruddy Duck. Common migrant on the Snake River. Merrill (1897:350) records this duck as "not uncommon in the spring and autumn" at Fort Sherman.
Lophodytes cucullatus (Linnaeus). Hooded Merganser. Common resident in suitable localities. (D. A. 1389, Lewiston, Nezperce County, April 2, 1939.)
Mergus merganser americanus Cassin. American Merganser. Common resident. Merrill (1897:350) states that the bird is common in fall and winter at Fort Sherman.