MAN-0’-WAR BIRDS—Family Fregatidae. 
FRIGATE BIRD. 
128. Fregata aquila. 40 inches. 
In comparison with their weight, these birds have the largest 
expanse of wing of any known bird. Weighing only about 
four pounds they have an extent of from seven to eight feet. 
The length of the bird is about 40 inches, of which the tail 
comprises about 18, more than half of this being forked. They 
can walk only with difficulty and are very poor swimmers, 
owing to their small feet and long tail, but they are com¬ 
plete masters of the air and delight to soar at great heights. 
Their food of small fish is secured by plunging, or preying 
upon other sea birds. 
Nest. —A frail platform of sticks in the tops of bushes or 
low trees. A single white egg (2.80 x 1.90). 
AMERICAN MERGANSER. ORDER ANSERES. 
129. M erg us americanus. 25 inches. 
These birds have the bill long, not flattened, but edged with 
sharp teeth to grasp the fish, upon which they live to a great 
extent. 
Nest. —Tn holes of trees, cavities among the rocks, or on 
the ground; 6 to 9 creamy buff eggs are laid (2.70 x 1.75). 
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