. The birds of eastern North America : known to occur east of the ninetieth meridian. Birds -- North America. FAMILY GROUSE, PARTRIDGES, QUAILS, ETC. 153 Depth of bill at base, .40 or more; 110 black 011 lores; shafts of secondaries, black. Newfoundland. Allen's Ptarmigan. Lac/opus lagopus See No. Depth of bill ;it base, less than .40. In summer: back, gray, mixed with black, or tawny buff, or gray and white. In winter: plumage, white ; lores, usually (not always) black. Rock Ptarmigan. Lag opus rupestris, and races. See No. 242. Similar to Lay opus ritpestris, but iu summer
. The birds of eastern North America : known to occur east of the ninetieth meridian. Birds -- North America. FAMILY GROUSE, PARTRIDGES, QUAILS, ETC. 153 Depth of bill at base, .40 or more; 110 black 011 lores; shafts of secondaries, black. Newfoundland. Allen's Ptarmigan. Lac/opus lagopus See No. Depth of bill ;it base, less than .40. In summer: back, gray, mixed with black, or tawny buff, or gray and white. In winter: plumage, white ; lores, usually (not always) black. Rock Ptarmigan. Lag opus rupestris, and races. See No. 242. Similar to Lay opus ritpestris, but iu summer, back, more heavily bin-red. Confined to Northern Labrador and Greenland. Reinhardt's Ptarmigan. Lac/opus nqiestris reinhardtf. See No. 243. Depth of bill at base, less than .40; shafts of secondaries, not black. Confined to island of Newfoundland. Welch's Ptarmigan. Lagopus welchi. See No. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cory, Charles B. (Charles Barney), 1857-1921. Chicago : Field Columbian Museum
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsnorthamerica
