Madagascar Serpent-Eagle

Eutriorchis astur

Very rare and enigmatic large raptor that is endemic to Madagascar. Occurs very locally in pristine eastern rainforest, where it hunts inside of the forest, never soaring. Call is a series of low “how” notes, sometimes delivered in slow series and sometimes more quickly and emphatically. Very similar to Henst’s Goshawk. Subtle differences include slightly larger size, denser barring on the chest, thinner black bands on the tail, and dark barring on the back. 

Identification

The Madagascar serpent eagle is a medium-sized raptor with a long rounded tail and short rounded wings. It is dark grey on its back and a lighter grey on its belly, breast, and throat. Dark barring covers the bird's body. It has yellow eyes and a sharp, hooked beak with strong talons. It measures 57 to 66 cm (22 to 26 in) long with a wingspan of 90 to 110 cm (35 to 43 in).

Taxonomy

Scientific name
Eutriorchis astur
Authority
Sharpe, 1875
Order
Accipitriformes
Family
Accipitridae
Genus
Eutriorchis

Range and habitat

This bird inhabits dense, humid, and broadleafed evergreen forests in northeastern and east-central Madagascar. It rarely ventures above 550 meters (1800 ft).

Migration
Resident species

Behavior

This serpent-eagle is diurnal. It eats lemurs both large and small, snakes, lizards, and frogs, which it hunts from high perches, swooping down from its perch and grasping its prey in its talons when it spots it.

Conservation

This species was believed to be extinct, with the last confirmed sighting being from 1930. However, sightings in 1977 and 1988 led to hope for the species' rediscovery. It was rediscovered in 1993 by the Peregrine Fund.<p>This species is threatened by the destruction of its specialized habitat and a presumed low rate of reproduction.

Population trend
declining

Photos

Distribution

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