The snow bunting (Plectrophenax nivalis ) is a passerine bird in the family Calcariidae. It is an Arctic specialist, with a circumpolar Arctic breeding range throughout the northern hemisphere. There are small isolated populations on a few high...
The Lapland longspur (Calcarius lapponicus ), also known as the Lapland bunting, is a passerine bird in the longspur family Calcariidae, a group separated by most modern authors from the Fringillidae (Old World finches).
Smith's longspur (Calcarius pictus ) is a bird from the family Calcariidae, which also contains the other species of longspurs. A bird of open habitats, it breeds in northern Canada and Alaska, and winters in the southern United States. Primarily a...
The chestnut-collared longspur (Calcarius ornatus ) is a species of bird in the family Calcariidae. Like the other longspurs, it is a small ground-feeding bird that primarily eats seeds. It breeds in prairie habitats in Canada and the northern...
The thick-billed longspur, formerly known as McCown's longspur (Rhynchophanes mccownii ), is a small ground-feeding bird in the family Calcariidae, which also contains the other longspurs and snow buntings. It is found in North America and is the...
McKay's bunting (Plectrophenax hyperboreus ) is a passerine bird in the longspur family Calcariidae. It is most closely related to the snow bunting (P. nivalis ). Hybrids between the two species have been observed, leading some authorities to treat...
