Definitions for dall sheep

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Princeton's WordNet

  1. Dall sheep, Dall's sheep, white sheep, Ovis montana dalli(noun)

    large white wild sheep of northwestern Canada and Alaska

Freebase

  1. Dall sheep

    The Dall sheep, Ovis dalli, is a species of sheep native to northwestern North America, ranging from white to slate brown in color and having curved yellowish brown horns. Its closest relative is the more southern subspecies, Stone sheep, which is a slaty brown with some white patches on the rump and inside the hind legs. Research has shown the use of these subspecies designations is questionable. Complete colour integradation occurs between white and dark morphs of the species with intermediately coloured populations, called Fannin sheep, found in the Pelly Mountains and Ogilvie Mountains of Yukon Territory. Mitochondrial DNA evidence has shown no molecular division along current subspecies boundaries, although evidence from nuclear DNA may provide some support. Also at the species level, current taxonomy is questionable because hybridization between Ovis dalli and Ovis canadensis has been recorded in recent evolutionary history. The latter half of the Latin binomial dalli is derived from William Healey Dall, an American naturalist. The common name Dall sheep or Dall's sheep is often used to refer to the species Ovis dalli. An alternative use of common name terminology is that thinhorn sheep refers to the species Ovis dalli, while Dall's sheep and Stone's sheep refer to subspecies Ovis dalli dalli and Ovis dalli stonei, respectively.

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