Burrowing owls (Athene cunicularia), which we call Lechucita de Campo, are fairly common in Uruguay and we often see them in fields or even on sand dunes or abandoned structures by the sea.
This is a Ñacurutú (Bubo virginianus, Great Horned Owl) which we saw in Tacuarembó department, Uruguay. It was perched on the edge of a eucaliptus grove, close to a highway. In the afternoon heat the owl barely moved and was difficult to see.