Fig. 319.—Golden Eagle (Aquila chrysaetos). North America and Europe 
334 COMPARATIVE ZOOLOGY. 
The wings are adapted for rapid or long flight; and they 
hop, rather than walk, on the ground. 170 They always 
live in pairs; and the young are hatched helpless. 
8. Eaptores , or Birds of Prey, differ from all other 
Birds, except Parrots, in having a 
strongly hooked bill and a waxy 
membrane (cere) at the base of the 
upper mandible; and from Parrots, 
Fig. 317—Barn-owl (Strix flam- 
mea ). Both hemispheres. 
Fig. 318. — Fish - hawk (Pandion Caroline.hsis ). 
United States. 
in having three toes in front and one behind. The toes 
are armed with long, strong, crooked talons; the legs are 
robust; and the wings are of considerable size, adapted 
