Tawny-bellied Screech Owl

Identification

The tawny-bellied screech owl is a small owl, measuring 19 to 24 cm in length and weighing between 114 and 155 grams depending on subspecies. The nominate subspecies displays a dark buff facial disc rimmed with a thin darker border, dark buff brows, and distinctive longish broad "ear" tufts. Its crown and upperparts are dark gray-brown with black and buff spots and vermiculations, while the tail features alternating brown and light buff bars. The breast is dark brown with small buff spots, and the remaining underparts are buff with black streaks and faint white bars on the belly. The subspecies M. w. usta is noticeably more rufous overall with broader streaks on the underparts and warm brown eyes, and it also occurs in brown and buff color morphs.

Range & Habitat

The tawny-bellied screech owl is found across much of northern South America and the Amazon basin, occurring in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela. The nominate subspecies inhabits areas north of the Amazon River, ranging from eastern Colombia eastward through Venezuela and the Guianas and south through Ecuador into northeastern Peru and Amazonian Brazil. The subspecies M. w. usta occupies territory south of the Amazon in eastern Peru, northern Bolivia, and southern Amazonian Brazil to northern Mato Grosso.

This species prefers the interior of lowland rainforest, particularly old growth and mature secondary forest, typically favoring undergrowth to the mid-story below 30 meters in height. While it is seldom found above elevations of 600 to 700 meters, M. w. usta shows greater adaptability and can also be found in altered forest along waterways and near human settlements.

Behaviour & Diet

The tawny-bellied screech owl is nocturnal and forages at lower levels of the forest. Little is known about its feeding habits, but it is believed to feed mostly on insects, possibly supplemented with small vertebrates. Breeding biology remains poorly documented, though nests have been found in holes within dead palms; one nest contained a very young chick while another held two eggs, with at least one nest documented in September.

The vocalization of the nominate subspecies is distinctive: its primary song is a long series of rapid notes that accelerates and increases in volume before fading into a low trill, while its secondary song consists of a brief series of short "wu" notes. M. w. usta produces similar vocalizations but at a slower tempo, with a secondary song believed to be a fast series of "bu" notes that slow to a "bouncing" rhythm.

Best Time & Places to See It

The tawny-bellied screech owl appears to be fairly common and widespread throughout its range, though it remains poorly known. Travellers seeking this species should focus on mature and old-growth lowland rainforest habitats in the Amazon basin. The bird's preference for undergrowth and mid-story levels means that nocturnal visits to suitable forest locations offer the best chance of encounter. The subspecies M. w. usta's greater tolerance of altered forest and proximity to human settlements may make it slightly more accessible to travellers in parts of Peru, Bolivia, and Brazil south of the Amazon River.

Photography Tips

Photographing this small, nocturnal owl presents significant challenges. Night-time photography will be essential, requiring high-ISO capability and either artificial lighting or infrared equipment. The species' preference for the lower and middle forest levels, rather than exposed perches, means patience and knowledge of its calls will improve your chances of locating individuals. Learning to recognize the distinctive vocalizations of the nominate subspecies and M. w. usta will help you pinpoint birds by sound. Always photograph responsibly in rainforest habitats, maintaining distance to avoid disturbing this poorly-studied species, and be prepared for the dense, humid forest environment in which it lives.