Sumichrast’s Wren is a relatively large, plump, very long-billed, dark brown bird, with some white speckling on the lower belly. This Near Threatened species apparently is restricted to about a dozen localities in west central Veracruz, northern Oaxaca and extreme eastern Puebla, all in southern Mexico, where it is still fairly common but local. It inhabits limestone outcrops in steep hilly country covered by lowland evergreen and semi-evergreen forest, but also occurs in shade coffee plantations, and the species seems to be tolerant of some degree of habitat degradation. It feeds mostly on invertebrates, but also takes small fruits. Sumichrast’s Wren until recently was classified as conspecific with another Mexican endemic, Nava’s Wren (Hylorchilus navai).