. The water birds of North America . 171 are of a paleolive-gray, varying in length from to inches, and have an average breadthof inches. 22 LAMELLIROSTRAL SWIMMERS — ANSERES. Fulix affinis. THE LESSEK SCAUP DUCK; LITTLE BLACK-HEAD, OK BLUE-BILL. Fuligula mairiUu, Arm Orn. Biog. lit. 1S35, 226 ; V. 1S39, 614, pi. 229 ; Synop. 1S39, 286 ; II. Am. VI. 1S43, 316, pi. affinis, Etton, Mob. Anat. 1S38, 157. — Coues, Key, 1872, 289; Check List, 1873, no. 501 ; 2d ed. 1882, no. 721 ; B. N. W. 1S74, affinis, Baikd, B. N. Am. 1858, 791 ; Cat. N. Am. B. 1859, no. 589
. The water birds of North America . 171 are of a paleolive-gray, varying in length from to inches, and have an average breadthof inches. 22 LAMELLIROSTRAL SWIMMERS — ANSERES. Fulix affinis. THE LESSEK SCAUP DUCK; LITTLE BLACK-HEAD, OK BLUE-BILL. Fuligula mairiUu, Arm Orn. Biog. lit. 1S35, 226 ; V. 1S39, 614, pi. 229 ; Synop. 1S39, 286 ; II. Am. VI. 1S43, 316, pi. affinis, Etton, Mob. Anat. 1S38, 157. — Coues, Key, 1872, 289; Check List, 1873, no. 501 ; 2d ed. 1882, no. 721 ; B. N. W. 1S74, affinis, Baikd, B. N. Am. 1858, 791 ; Cat. N. Am. B. 1859, no. 589. — RlDGW. Norn. N. Am. B. 1881, no. mariloides, Vio. Zool. Blossom, 1839, minor, Bell, Pr. Ac. Nat. Sci. Philad. I. 1842, 141. —Gieaud, B. Long. I. 1844, 323. Hab. The whole of North America, south to Guatemala and the West Indies ; breeds chieflynorth of the United States. Sp. Char. Entirely similar to F. raarila, but smaller. Total length, about inches ; extent, ; wing, 7.( Male (reduced). ulmen, ; width of bill near end, ., at base,.; tarsus, ; middle toe, the decidedly smaller size, we can per-ceive no difference between this bird and F. marilawhich seems to be constant. In most of the speci- x mens before us, however, the green gloss of the head is much less distinct, in fact wanting entirely,or in many replaced by faint purplish ; while thelower part of the neck is usually dull brownishand quite lustreless, in many examples formingquite as distinct a collar as in some specimens of , though the color is never so rufescent asin the latter species. The zigzag markings on theback and scapular appear to be, as a rule, somewhatcoarser than in F. marila. As in the larger spe-cies, the sides and flanks may be either markedwith dusky, or quite immaculate. A larger series of specimens may prove theintereradation of this form with F. marila. A full and complete histor
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbirds, bookyear1884
