Ovenbirds (Furnariidae)

Chaco Earthcreeper (Upucerthia certhioides) - HBW 8, p. 249

French: Upucerthie du chaco German: Roststirn-Erdhacker Spanish: Bandurrita Chaqueña

Taxonomy: Anabates certhioides d’Orbigny and Lafresnaye, 1838, Corrientes, Argentina.
Sometimes placed in a separate genus Ochetorhynchus along with U. ruficaudus and U. harterti; closest to latter, with which may form a superspecies, or the two may be conspecific. Differs from other congeners for which relevant data available in having pale blue eggs (not white) and more flexible nest-site placement. Racial variation may be partly or entirely clinal, and one or more of the races possibly not tenable; quantitative study of plumage coloration required. Three subspecies recognized.

Subspecies and Distribution:

  • estebani (Wetmore & J. L. Peters, 1949) - extreme SC Bolivia (Santa Cruz), N Argentina (Jujuy and Catamarca E to Chaco and S to Córdoba) and W Paraguay.
  • luscinia (Burmeister, 1860) - W Argentina (San Juan, La Rioja and W Córdoba S to Mendoza and N San Luis).
  • certhioides (d’Orbigny & Lafresnaye, 1838) - NE Argentina (E Formosa and C Corrientes S to E Río Negro and SW Buenos Aires).