NEW YORK ZOOLOGICAL PARK. 133 
MUTE AND TRUMPETER SWANS. 
SECTION II.—BIRDS. 
THE GOOSE AVIARY, No. 3. 
There are no birds which take more kindly to captivity, 
or which better repay their keep and their keepers, than the 
ducks, geese, swans and pelicans. The only drawback to 
the maintenance of large collections of these birds in this 
latitude is the annual struggle with our arctic winter. On 
account of the fierce winter storms to which we must pay 
tribute, many species of swimming birds require to be taken 
out of their aviary, and housed in sheltered buildings, with 
moderate warmth. For this reason the pelicans, tree-ducks 
of all species, and all species from the tropics, must neces- 
sarily be absent in winter from their summer quarters. 
For the accommodation of a large, systematic collection of 
wild geese, an aviary two hundred and fifty feet long by 
one hundred and forty-three feet in width has been con- 
structed in the north end of Bird Valley. To secure as much 
space as possible, the entire width of the open valley has 
been taken into the enclosure. 
The Goose Aviary consists of a pond containing three 
islands, two of which are subdivided by low fences of wire 
netting into twelve separate enclosures. The collection of 
geese has become so large and important the original Duck 
