Note: Information is dated. Do not rely on it.Mocking Bird. A genus of the family Troglodytidae, or wrens, exclusively American in its distribution, but ranging widely over the southern and rarely over the northern portions of that continent. These birds are remarkable for their power of song. The best known species is Alimus polyglottos, which has marvelous power of voice, and is able to imitate almost any species of animal, as well as noises produced artificially. Its own song is loud, full, and exceedingly varied. In plumage it is decidedly somber, being of a general ashy-gray hue, paler beneath; but, though the mocking bird cannot vie with other American birds in brilliancy of plumage, its sweet and varied notes and its faculty of imitation render it a prime favorite.