Eastern Barn Owl

The eastern barn owl breeds at varying times of year depending on locality, laying a clutch averaging about four or five eggs, range two to nine, in a nest in a tree hollow, old building or fissure in a cliff. The female lays on alternate days and does all the incubation, and she and the young chicks rely on the male for food (Wikipedia, general species account).

The only source read for the Bhutan guide gives these nesting details. No plumage, size, range or diet information was found, so none is stated, and its occurrence in Bhutan is flagged for checking.