ooo The Bird 
so much like a human hand, it is not a good walking foot. 
When a parrot is in great haste to reach some object 
on the ground without flying, it waddles awkwardly, “toe- 
ing in” and frequently tripping up. When this happens, 
out fly the wings, and, as if reverting to some clouded 
memory of the habits of its pre-Jurassic forefathers, it 
walks on all jours. A young Canada Goose, when climb- 
ing about its nest, or a Fish Hawk in the downy nestling 
Fic. 257.—Nestling Catbird, supporting itself, lizard-like, on all four limbs. 
plumage, does the same thing, and young birds of many 
species, when too young to stand, push themselves along 
the ground with feet and wings; a young grebe doubtless 
being the most accomplished in this motion. In certain 
adult birds, such as the swan, Osprey, Turkey Vulture, 
and the various ostrich-like birds, there are perfect claws 
at the tips of one or more of the skin-bound wing-fingers. 
These are true relics of a lizard-handed ancestry. 
Before going on to find the more curious uses to which 
