The Chaco Owl has a white facial disk edged in dark, a white crown with a brown center stripe, and dense brown barring below. It is active at dusk and night in the dry Chaco region of South America.
Its white facial disk has a dark edge, and its white crown has a central brown band. The back and pale underside are barred brown; the wings and tail have reddish bars.
It is crepuscular and nocturnal. Field observations in Formosa also recorded it at rural settlements as well as in dry woodland.
An extinction-risk assessment has not been added yet.