. Key to North American birds; containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary . ., vii, 247, pi. 4G6; Cass, in Bd., 901; Coues, I. c. 18,and op. cit. 1861, 249 torda. 318-9. Genus FEATERCULA Brisson. * Not crested; eyelids appendaged; under mandible sulcate, like the upper,the grooves convex forward ; culmen simple, with one curve; base of bill bossed ;corners of mouth callous. Blackish, including the throat, the sides of the headashy-gray, with dusky maxillary patches (whole face dusky


. Key to North American birds; containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary . ., vii, 247, pi. 4G6; Cass, in Bd., 901; Coues, I. c. 18,and op. cit. 1861, 249 torda. 318-9. Genus FEATERCULA Brisson. * Not crested; eyelids appendaged; under mandible sulcate, like the upper,the grooves convex forward ; culmen simple, with one curve; base of bill bossed ;corners of mouth callous. Blackish, including the throat, the sides of the headashy-gray, with dusky maxillary patches (whole face dusky in the young) ; below,white ; bill red, blue and yellow ; feet red. {Fratercula.) Horned Puffin. A slender sharp spur on upper eyelid. Black of throatreaching the bill. 14J ; wing 1\ ; tail 2^ ; bill 2 ; tarsus 1 J. N. Pacilic;not authentic on our Atlantic Coast. Mormon glacialis Aud., vii, 236, ; 31. corniculata Cass, in Bd., 902; Coues, I. c. 24. corniculata. Common Piffin. 6ea Parrot. A thick blunt excrescence on of throat not reaching the bill. 13J ; wing 6J; tarsus 1; bill 2, depthiit base 1^. N. Atlantic, breeding in vast numbers, in burrows; egg 2^X13?. Fig. 216. Common Puffin. broadly ovoid, rough-granular, white or whitish, more rarely brownish,obsoletely or not at all variegated. S. in winter to the Middle States (toGeorgia, Audubon). Nutt., ii, 542; Aud., vii, 238, pi. 464; Cass, inBd., 903; Coues, I. c. 21, and op. cit. 1861, 251 arcticus. Var. GLACIALIS, from the Arctic Coasts, is rather larger, especially the bill,which is about 2^ long, I5—If deep at base. Cass, in Bd., 903 ; Cooes, I. c. 23. ** Adult with a long flowing crest of filamentous feathers on each side of thehead ; eyelids simple ; under mandible smooth, upper sulcate, the grooves concaveforward ; culmen with two curves, the basal part bossed. (Lmida.) Tufted Puffin. Blackish, duller and more fuliginous below ; face white ;crests straw-yellow; bill red and livid; feet red. Young


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