The Clarion Wren is endemic to Isla Clarión in the Revillagigedo Islands, in the Pacific Ocean off western Mexico. The species is generally considered to be common, but the most accurate estimate puts the population at just 170–200 pairs, with most birds around buildings in arid scrub and cactus bushes. This is a plain, gray-brown wren, with a buffy-white supercilium and eye-ring, a dark-barred tail and wings, and pale buff underparts, barred darker on the undertail. The species’ song is similar to that of the House Wren (Troglodytes aedon). Very little has been published concerning the species’ biology, although the only recorded nest appeared similar to that of the House Wren. BirdLife International currently regards this species as being Vulnerable to extinction.