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Studer, Jacob Henry, 1840-1904. / Birds of North America
(1903)
Plate XCV. American lanier, or prairie falcon. Lanier falcon. Prairie hawk. (Falco mexicanus, var. polyagrus.), pp. 141-142
Plate XCVI. Canada grouse. Spruce grouse. Wood grouse. Swamp partridge. Black grouse. Black-spotted heath cock. (Tetrao canadensis.), p. 142
Page 142
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