BLACK-BELLIED TREE-DUCK. 
177. Dendrocygna autumncilis. 22 inches. 
These odd-shaped ducks, with their long legs and neck, are 
very common in southern Texas and along the Rio Grande. 
They are not timid and are frequently caught and domesti¬ 
cated. They can walk and run gracefully, and feed in grain 
fields at considerable distance from the water. They usually 
raise two broods in a season, each brood having from ten 
to as many as twenty. 
Nest. —They build their nests in hollow trees, oftentimes at 
a great distance from the water. The nest is lined with a few 
feathers and down. The eggs are a creamy white (2.05 x 1.50). 
FULVOUS TREE-DUCK. 
178. Dendrocygna bicolor. 22 inches. 
In form this duck is much like the last, but in color is more 
of a rufous all over, being darkest on the upper parts. It 
has no white markings. It is fully as abundant as the pre¬ 
ceding and is found farther north and west to the Pacific 
coast in southern California. 
Nest.— Their nesting habits; their eggs and the size of them 
are identical with the former. As many as 82 eggs have been 
found in one nest, but these were probably laid by two birds. 
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