The mottled wood owl (Strix ocellata) is a species of large owl found in India. They are found in gardens and thin deciduous forests adjacent to dry thorn forests or farmland. They are easily detected by their distinctive tremulous eerie calls at dawn and dusk. The characteristic call is a duet of the male and female while other notes include a low hoot and a screech. Their large size, lack of “ear” tufts and the concentric barring on the face make them easy to identify.

Source: Wikipedia