Roststirn-Erdhacker Tarphonomus certhioides

Small earthcreeper with long tail and curved bill. Inhabits the ground and low vegetation in dense Chaco spiny woodlands and shrubby slopes, where it generally forages alone. Both sexes have uniform orangish-brown plumage. Note the white throat and the dark supercilium. Feeds on small insects and caterpillars gleaned out of the ground. Voice is a series of 5–10 loud notes increasing in volume.