Sumichrast's Wren

Sumichrast's wren is 15 to 16.5 cm (5.9 to 6.5 in) long; a female weighed 28.4 g (1.00 oz). The adults have uniform deep brown crowns, napes, and backs; their rumps are a sooty brown. Their chin and throat are buff that deepens through the breast into the flanks and belly. The breast has faint dark bars and the belly has tiny white dots. The juvenile is similar, but its throat has a dirty look and faint dusky scales, its underparts are darker, and the breast and belly markings are fainter.

Sumichrast's wren occurs in a small area of Mexico, from central Veracruz into northern Oaxaca. It inhabits the understory of humid forest, both evergreen and semi-deciduous, and also shady coffee plantations. However, it is found only in scattered sites that have extensive limestone outcroppings. In elevation it ranges from 75 to 1,000 m (246 to 3,281 ft).

The diet of Sumichrast's wren is primarily arthropods and other invertebrates such as snails and worms, and also includes small fruit as a minor component. It forages on and very near the ground with hops and short flights, probing into crevices for prey and occasionally snatching a flying insect that passes it.