Striated Earthcreeper Geocerthia serrana

The Striated Earthcreeper is a striking, stocky, terrestrial furnariid endemic to Peru.
Found on rocky slopes with sparse vegetation from 2800 to 4200 m in elevation, it occurs only in western Peru. It has a thick, straight bill and sturdy black legs. The plumage is olive-brown above with rufous wings and tail, a pale buff superciliary, and a whitish throat, lower neck, and underparts with buffy streaking on the belly. Typically, the species is visually inconspicuous as it hops around on the ground with its tail cocked up, but can be detected by its song, a harsh, accelerating trill.