Chaco Owl (Strix chacoensis) [XC855101]
by Bernabe Lopez-Lanus from Capilla del Carmen, Pocho, C\u00f3rdoba, Argentina (?)
Chaco Owl (Strix chacoensis) [XC150847]
by Juan Mazar Barnett from Estancia Perforacion, Santa Cruz dept., Bolivia (song)
Subspecies
Strix rufipes (Sibley and Monroe 1990, 1993) has been split into Rufous-legged Owl (Strix rufipes) and Chaco Owl (Strix chacoensis) following SACC (2005).
Usually treated as a subspecies of Rufous-legged Owl (Strix rufipes).