. The birds of eastern North America known to occur east of the nineteenth meridian ... Birds. KEY TO FAMILIES. WATER BIRDS. 13 Nostrils, separate not tubular; bill, with cere (a horny or skin-like covering on base of uppei- mandible); hind toe, sometimes very small; end of upper mandible (unguis), swollen and somewhat rounded; back aud wings, always dark, sometimes sooty, souietimes barred with brown; tail, never white or gray, usuallv very dark; middle tail feathers, longest, [. Please note that these images are extracted from scanned page images that may have been digitally enhanced for rea
. The birds of eastern North America known to occur east of the nineteenth meridian ... Birds. KEY TO FAMILIES. WATER BIRDS. 13 Nostrils, separate not tubular; bill, with cere (a horny or skin-like covering on base of uppei- mandible); hind toe, sometimes very small; end of upper mandible (unguis), swollen and somewhat rounded; back aud wings, always dark, sometimes sooty, souietimes barred with brown; tail, never white or gray, usuallv very dark; middle tail feathers, longest, [. 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; Field Columbian Museum. Chicago, Special edition printed for the Field Columbian Museum
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Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorfiel, bookcentury1800, bookdecade1890, booksubjectbirds
