_Colymbus grisegena holböllii_ (Reinhardt). Holboell Grebe. Merrill (1897:349) records this species as common in migration at Fort Sherman. _Colymbus auritus_ Linnaeus. Horned Grebe. Uncommon resident. Davis (1935b:234) records the bird as a summer visitant at the Minidoka Project. _Colymbus nigricollis californicus_ (Heermann). Eared Grebe. Fairly common resident along rivers and in lakes. Rust (1915:121) records one specimen taken on Lake Coeur d'Alene in October, 1912. _Aechmophorus occidentalis_ (Lawrence). Western Grebe. Uncommon resident. Merrill (1897:349) records one specimen from Fort Sherman. _Podilymbus podiceps podiceps_ (Linnaeus). Pied-billed Grebe. Common resident. Merrill (1897:350) states that it is common at Fort Sherman in the spring and autumn. _Pelecanus erythrorhynchos_ Gmelin. White Pelican. Resident along the Snake River; large nesting colonies are to be found in Bear Lake County. See Davis (1935b:234) for nesting dates. _Phalacrocorax auritus albociliatus_ Ridgway. Farallon Cormorant. Davis (1935b:234) records this bird in the Minidoka Project as a regular migrant and gives dates of occurrence. The resident population at the Bear Lake Refuge has been reported as subspecies _auritus_ by Behle (1944:68), but probably is _albociliatus_. _Ardea herodias treganzai_ Court. Treganza Great Blue Heron. Common resident in suitable localities. (Dale Arvey 1505, 7 mi. NE Moscow, Latah County, Idaho, February 19, 1940.) _Leucophoyx thula brewsteri_ (Thayer and Bangs). Brewster Egret. Davis (1935b:234) records one specimen from the Minidoka Project, taken on September 16, 1919, and Hayward (1934:39) reports the species as breeding at Bear Lake Valley in Bear Lake County. _Nycticorax nycticorax hoactli_ (Gmelin). Black-crowned Night Heron. Common locally. Hayward (1934:39) reports the bird as resident in Bear Lake Valley. _Botaurus lentiginosus_ (Montagu). American Bittern. Fairly common resident in suitable localities. Merrill (1897:351) records the American Bittern as rather common at Fort Sherman. _Plegadis mexicana_ (Gmelin). White-faced Glossy Ibis. Vagrant. Recorded as common at the Minidoka Project by Kenagy (1914:122). _Cygnus columbianus_ (Ord). Whistling Swan. Resident in the winter in the larger lakes, and transient along the Snake River. (D. A. 1783, 1 mi. S Hagerman, Gooding County, February 1, 1940.) _Cygnus buccinator_ Richardson. Trumpeter Swan. Merriam (1891:91) states that Bendire found this swan breeding on Henry Lake in 1877, and that two were collected in August of that year. Rust (1915:123) records the species as a rare fall migrant on Lake Coeur d'Alene. There are no recent records. _Branta canadensis_ (Linnaeus). Canada Goose. Fairly common resident. See Aldrich (1946b) for records of each subspecies. a. _moffitti_ Aldrich. Great Basin Canada Goose. This is the resident race. b. _occidentalis_ (Baird). White-cheeked Goose. Migrant.