HIRUNDINIDAE 
SWALLOWS 
The Swallows are known the world over. They have a wide 
mouth ; long, strong wings; tail usually more or less forked; feet 
small and weak ; plumage lustrous with metallic shadings. 
Flight circling. .They feed on insects caught in the air. Perch 
often on telegraph wires, seldom alight on the ground. Nest and 
migrate in flocks. 
