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Clark's Eighteen New Species and One New Genus of Birds from Eastern Asia and the Aleutian Islands

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The Condor

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[=Proc. U.S. Nat. Mus. Vol. XXXII, pp. 467-475; June 15, 1907].

This paper includes the description of a new Rock Ptarmigan, from Adak Island, one of the central links in the Aleutian Chain. The bird is called Lagopus rupestris chamberlaini, and is characterized [in nuptial plumage of male?] as being the grayest and one of the lightest of the Aleutian insular forms of the Rock Ptarmigan.

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