The sole member of its genus, Black Catbird is one of the smallest of the Mimidae, and is endemic to the Yucatán Peninsula of eastern Mexico, northern Belize and northern Guatemala, including the offshore island of Cozumel and other smaller cays. It formerly was present in Honduras, from whence the type specimen originates, but has not been recorded there since the 1850s. The species is uniformly glossy blue-black, with dark reddish irides, a long tail and rather short wings. Black Catbird inhabits scrubby, low-stature woodland and thorn scrub, where it is generally fairly common, at least over much of the species’ mainland range. Although considered to be largely resident and sedentary, this catbird appears to vacate the drier northern Yucatan Peninsula between late summer and early winter.
Reference: Birds of the World - Cornell Lab of Ornithology