Chaco Owl (Strix chacoensis) [XC70551]
by JACOB Herv\u00e9 from Palma Chueca, Rivadavia, Salta, Argentina (song)
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).