Speotyto cunicularia (Molina, 1782)
Strigidae; Strigiformes; Aves; Chordata
The burrowing owl is a widespread species of owl found throughout South America, north to the southern half of North America. It is well known for being the only owl species, indeed, one of the only birds, to nest underground; it does so to avoid predation from larger animals, as it lives mostly on treeless plains.
In the above photograph, you may notice one pupil looks larger than the other; I think this is to do with the owl's left eye being in shade and its right eye in the sun, hence the difference in size in the pupils.