Chaco Owl (Strix chacoensis) [XC336477]
by Jon King from Estancia Teniente Montan\u00eda, Departamento de Boquer\u00f3n, Paraguay (call)
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).