The Socorro mockingbird is a member of the Mimidae family, and endemic to Socorro Island, Mexico. This species is also referred to as Socorro thrasher, especially in older literature (e.g., Brattstrom & Howell 1956). Adults stand about 10 in (25 cm) tall and are mostly brown, with whitish underparts, darker wings (except for two narrow bands of white), a dark tail, reddish iris, and dark gape (the soft tissue at the corner of the mouth) (BLI 2007f; Martı´nez-Go´mez & Curry 1998). Male and female Socorro mockingbirds have similar plumage, but males are larger than females. A juvenile (first-year bird) can be distinguished from an adult by its plumage, spotted breast, grayish iris, and yellowish gape (Martı´nez-Go´mez & Curry 1998).