longspur

Any of several sparrowlike birds of the genera Calcarius and Rhynchophanes of North America and Eurasia, having brownish plumage and long-clawed hind toes.

In ornithology, a bird of the genus Centrophanes (or Calcarius): same as lark-bunting, 1.

Any one of several species of fringilline birds of the genus Calcarius (or Plectrophanes), and allied genera. The Lapland longspur (Calcarius Lapponicus), the chestnut-colored longspur (Calcarius ornatus), and other species, inhabit the United States.

A specific type of bird, of the genus Calcarius; it has a long claw on the hind toe of each foot.