NEW YORK ZOOLOGICAL PARK. 167 
LiutTLE BROWN CRANE. DEMOISELLE CRANE. 
the eggs are incubated by the heat of the sun and the fer- 
mentation of the mass. When hatched, the young chicks are 
able to fly. 
THE CRANES. 
At present the Cranes of the Zoological Park are divided 
between the Ostrich House and the Aquatic Bird House, and 
their environs. In summer there are exhibits of these birds 
in the outdoor yards adjacent to each of those buildings. 
Recently, a number of species have been acclimatized in the 
Crane Paddock, and are to be seen there winter and sum- 
mer. 
The Whooping Crane, (Grus americana), is the largest, the 
handsomest and the rarest crane species in America. Its 
great size and its pure-white plumage—except its primar- 
ies—render it conspicuous from afar, and its voice will carry 
half a mile. The arched secondary wing feathers of the 
adult give the bird a very jaunty appearance. This species 
is so rare that thus far we have been able in eight years 
to secure only three specimens. The Whooping Crane nests 
in summer in the Arctic regions, but in winter it ranges 
as far south as Mexico. Our specimens of this bird will in 
summer be found in the large paddock immediately north 
of the Aquatic Bird House, with the next species. 
The Sandhill Crane, (Gris mexicana), is smaller than the 
preceding species, more common, and is frequently seen in 
