A frigate bird or man-of-war bird is a tropical web-footed bird, related to the pelican. It takes its name from the savage attacks it makes upon gulls and other birds, when they are carrying their prey. In flight the frigate bird is powerful and graceful, and its prey is taken upon the wing. In the breeding season the pouch under the male's bill, which he is able to inflate, be- comes a bright scarlet. The birds breed in large colonies on rocky cliffs or in the tops of tall trees on uninhabited islands. The upper plumage is dark brown.
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