The New Student's Reference Work/Indigo Bird

Indigo Bird, a bird about the size of a canary, common in the United States and belonging to the finch family. The male is indigo-blue, "the bluest bird that flies in North America," the female a dull brown color and difficult to distinguish from several other small birds. Although naturally shy, they breed near habitations. The nest is often placed in low bramble or brier bushes. They arrive in May and depart for tropical America in September. During the time of their sojourn, the male keeps up a merry and almost continuous singing. In the warmest weather, even in the heat of midday, he is not daunted, but continues his song.