. Bird-life; a guide to the study of our common birds . showing relative lengthof legs and neck in a wading bird.(Much reduced.) FOEM AND HABIT: THE FEET. 29 Sparro-svs use both feet in searching for food, jumpingquickly backward and throwing the leaves behind them. Parrots use their foot as a hand. Some Hawks carrynesting material in it, and all birds ofprey strike their quarry with theirstrongly curved claws, which are thenused to carry, or hold it while it isbeing torn by the bill. The foot ofthe Fish Hawk is a magnificent nails are strong and well curved ;the inner surface of the
. Bird-life; a guide to the study of our common birds . showing relative lengthof legs and neck in a wading bird.(Much reduced.) FOEM AND HABIT: THE FEET. 29 Sparro-svs use both feet in searching for food, jumpingquickly backward and throwing the leaves behind them. Parrots use their foot as a hand. Some Hawks carrynesting material in it, and all birds ofprey strike their quarry with theirstrongly curved claws, which are thenused to carry, or hold it while it isbeing torn by the bill. The foot ofthe Fish Hawk is a magnificent nails are strong and well curved ;the inner surface of the toes is set withsharp, horny spikes, and the outer toeis partly reversible, so that the birdgrasjDS its slippery prey from four dif-ferent points. As a weapon the foot is especiallyeffective, the use of spurs being toowell known to require comment. Os-triches kick with their feet, and can, it is said, deliver ablow powerful enough to fell a man. But by far the best instance of modification in thestructure of the feet is furnished by Grouse. It is an. Fig. 15.—Foot of FishHawk, showing hirgoclaws, and spicules onunder surface of toes.(Ya natural size.)
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Keywords: ., bookcentury1800, bookdecade1890, bookidbirdlife, booksubjectbirds
