. 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. INDEX TO KEY. 11. Group 3. Birds having wings between and inches long 18 Section 1. Bill, narrow, with tooth-lUce serrations . 18 Section 2. Bill, not narrow; hind toe, without mem- braneous lobe or flap ; a patch of grayish blue on shoulder (lesser and middle wing coverts) . . . 18 Section 3. Hind toe, without membraneous lobe or flap; lesser and middle wing coverts, not grayish blue . 19 Section 4. Hind toe, with well-deflned membraneous
. 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. INDEX TO KEY. 11. Group 3. Birds having wings between and inches long 18 Section 1. Bill, narrow, with tooth-lUce serrations . 18 Section 2. Bill, not narrow; hind toe, without mem- braneous lobe or flap ; a patch of grayish blue on shoulder (lesser and middle wing coverts) . . . 18 Section 3. Hind toe, without membraneous lobe or flap; lesser and middle wing coverts, not grayish blue . 19 Section 4. Hind toe, with well-deflned membraneous lobe or flap ; head marked with more or less white or brownish white; belly, white, sometimes tinged with dusky or gray on lower part . . 19 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 20 Section 6. Hind toe, with well-deflned membraneous lobe or flap ; belly, not white ...... 20 Group 4. Birds having wings from to 10 inches long 21 Section 1. Bill narrow, with tooth-like serrations . 21. 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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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1897
