. How to know the ducks, geese and swans of North America, all the species being grouped according to size and color. Ducks; Geese; Swans; Birds. 20 KEY TO DUCKS, GEESE AND SWANS OF NORTH AMEEICA. A patch of white or grayish white on the head, including the eye; no specu- lum ; under tail coverts, white; adult males have the tail feathers long and pointed. Old Squaw. Long-tailed Duck. Olangula hyemalis. See page 64. Section 5. Hind toe with well defined membraneous lobe or flap; belly, white, sometimes tinged on lower part with dusky or gray; no white or grayish white on Head, brown. Gl
. How to know the ducks, geese and swans of North America, all the species being grouped according to size and color. Ducks; Geese; Swans; Birds. 20 KEY TO DUCKS, GEESE AND SWANS OF NORTH AMEEICA. A patch of white or grayish white on the head, including the eye; no specu- lum ; under tail coverts, white; adult males have the tail feathers long and pointed. Old Squaw. Long-tailed Duck. Olangula hyemalis. See page 64. Section 5. Hind toe with well defined membraneous lobe or flap; belly, white, sometimes tinged on lower part with dusky or gray; no white or grayish white on Head, brown. Glaucionetta clangula americana (female). See page 59. Glaucionetta clangula americana. Head, black, glossed with green; speculum, white; back, grayish white finely lined with black. Oreater Scaup Duck. Blue-bill or Black Head. Aythya marila nearctica (male). See page 56. Head, black, glossed with purple, finely lined with black; speculum, white; back, grayish white, smaller than the preceding species, but resembles it closely. Lesser Scaup Duck. Blue-bill or Black-head. Aythya affinis (male). See page 57. Head, black, with violet or bluish gloss, a spot of white on the chin; specu- lum, gray; back, dull black. Ring-necked Duck. Aythya collaris (male). See page 58. Section 6. Hind toe with well defined membraneous lobe or flap; belly, not white. Plumage, variously marked with white, slate-color and chestnut; speculum, bluish; top of head and wing coverts, not white. Harlequin Duck. Histrionicus histrionicus (male). See page 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. Boston, For sale by Little, Brown & Co.
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Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1897
