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Madagascar Owl Asio madagascariensis Scientific name definitions

Penny D. Olsen and Jeffrey S. Marks
Version: 1.0 — Published March 4, 2020
Text last updated July 28, 2017

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Field Identification

c. 40–50 cm (1); 770 g (n = 1 female) (2). Medium-sized strigid; head dark brown, flecked with tan; long , similarly coloured ear tufts ; buffy-tan facial disc , turning to dark brown around deep; upperparts vermiculated and spotted brown, tan and black; flight feathers and tail barred brown and buff; breast and belly light buffish with dark brown shaft streaks , becoming more widely spaced and arrow-shaped toward belly; irides orange; cere greyish-brown (1); bill blackish with paler tip (1); toes yellowish-brown. Sexes similar, female larger. At fledging, juvenile with white down and contrasting black facial mask, ear tufts fully visible; after first molt, streaked paler buff than adult with buffy-white barring on scapulars and inner secondaries, paler buff underparts (3).

Systematics History

Closely related to A. otus and A. abyssinicus. Has been treated as race of A. otus, but considered specifically distinct on grounds of smaller size, darker eyes and more orange-yellow plumage. Monotypic.

Subspecies

Monotypic.

Distribution

Madagascar.

Habitat

Humid evergreen forest, dry deciduous forest and gallery forest; also dense secondary woodland, including degraded habitats such as urban areas, parks and plantations (3, 2); observed from sea-level to at least 1625 m (3), perhaps occurs to 1800 m elevation (1). Roosts in thick vegetation during day.

Movement

Resident (1).

Diet and Foraging

Mainly small mammals, including rats (Rattus) and mouse lemurs (Microcebus), with greatest proportion of diet introduced rodents; also takes free-tailed bats (Tadarida); occasionally amphibians, reptiles, birds and insects (3). Long powerful claws; takes large prey for its size; average prey mass c. 70–80 g (3). Strictly nocturnal. Hunts in forest and also in adjacent open areas.

Sounds and Vocal Behavior

Long series of accipiter-like, barking “wan gwan, wan gwan”  notes, accelerating and increasing in volume, dropping and fading at end; also lilting “ulooh”, repeated at intervals. Food-begging fledglings give an upward-inflected "screech"  (1).

Breeding

Little information. One nesting event, on Masoala peninsula, followed from pair formation to fledging (2): nest placed on clump of epiphytes c. 9 m above ground; eggs laid on 2 and 3 Sept; incubation period 35–36 days; nestling period c. 36 days; fledglings remained within 15 m of nest for 1 week and then within 50–70 m of nest until leaving natal area permanently when 64 days old (2). From anecdotal reports, nesting occurs Aug–Nov; one nest seen on epiphytic fern; also said to lay in old stick nests of other birds (1); clutch size 2–3 eggs; 3 young observed mid-Oct, roosting juvenile seen late Dec (3).

Not globally threatened (Least Concern). CITES II. No information on global population size or population trends. Status difficult to assess because of secretive and nocturnal lifestyle; may be overlooked. More commonly seen in E at Andapa, Maroantsetra, Sihanaka forest, Andasibe, Ranomafana, and forest of Sambirano and Montagne d’Ambre, on High Plateau; and at Morondava and Berenty in W and S. Persecuted by villagers, who regard it as an evil omen; in 1982, dead adult seen nailed up on outskirts of a village. May be threatened by deforestation, which is extensive in Madagascar, but uses wide variety of habitats, including those heavily disturbed by humans, and readily feeds on introduced rodents (3).

Distribution of the Madagascar Owl - Range Map
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  • Year-round
  • Migration
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Distribution of the Madagascar Owl

Recommended Citation

Olsen, P.D. and J. S. Marks (2020). Madagascar Owl (Asio madagascariensis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.mleowl1.01
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