Zimmer's Tapaculo

Zimmer's tapaculo is 10.5 cm (4.1 in) long. Males weigh 17.6 to 19.9 g (0.62 to 0.70 oz) and one female weighed 15.9 g (0.56 oz). The adult's most striking feature is its white supercilium, throat, and upper breast. The rest of the head, the back, and the wings are gray with a brown wash on the back. The lower breast and belly are also gray. Its flanks and vent are olive-brown and have dusky bars. The juvenile's supercilium is faint buff, its upper parts olive-brown with dusky bars, its breast and upper belly gray, and the flanks and lower belly are buff with dusky bars.

Zimmer's tapaculo is found in southern Bolivia's Chuquisaca and Tarija departments and Argentina's Jujuy and Salta provinces. It ranges the Andean slopes from 1,700 to 3,200 m (5,600 to 10,500 ft) elevation. It inhabits several vegetative communities including seasonally humid Alnus, Podocarpus, and Polylepis woodlands where it frequents ravines and other shady areas, and also open wet rocky slopes with bunch grass and shrubs.

Zimmer's tapaculo forages on and near the ground, often staying hidden among roots, rocks, and ferns. Its diet is not well known but it appears to favor seeds.