Elementary zoology (1902) Elementary zoology elementaryzoolog00kell Year: 1902 BRANCH CHORD AT A; CLASS AVES: THE BIRDS 363 fectly opposable to the middle front one. This is the perching foot. Note the so-called zygodactyl foot of the woodpecker, with two toes projecting in front and partly yoked together, and two similarly yoked projecting behind. Note the webbed swimming foot of the aquatic birds; note the different degrees of webbing, from the totipalmate, where all four toes are completely webbed, palmate, where the three front toes only are bound Fig. 143.—Russet-backed thrush, Turdus
Elementary zoology (1902) Elementary zoology elementaryzoolog00kell Year: 1902 BRANCH CHORD AT A; CLASS AVES: THE BIRDS 363 fectly opposable to the middle front one. This is the perching foot. Note the so-called zygodactyl foot of the woodpecker, with two toes projecting in front and partly yoked together, and two similarly yoked projecting behind. Note the webbed swimming foot of the aquatic birds; note the different degrees of webbing, from the totipalmate, where all four toes are completely webbed, palmate, where the three front toes only are bound Fig. 143.—Russet-backed thrush, Turdus ustulatus. life by Eliz. and Jos. Grinnell.) (Photograph from together but the web runs out to the claws, to the semi- balmate, where the web runs out only about half way. Note the lobate foot of the coots and phalaropes. Note the long slender wading legs of the sandpipers, snipe and other shore birds; the short heavy strong leg of the divers; the small weak leg of the swifts and humming birds, almost always on the wing; the stout heavily nailed foot of the scratchers, as the hens, grouse, and turkeys; and the strong grasping talons, with their sharp long
Size: 1660px × 1205px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
