Red Owl
Tyto soumagnei
A rare and enigmatic owl that is endemic to Madagascar. Unlikely to be seen unless you are expressly searching for it. Found in eastern rainforest, and very locally in dry deciduous forest in the north. Call is a spine-chilling screech that drops at the end. Similar to Barn Owl, but much more rufous overall, especially on the back, which never shows gray tones.
识别特征
The red owl is an orange-red color with small black spots. Their eyes are typically a sooty-black color, the beak is a pale grey, and the cere (a fleshy patch at the base of the upper mandible of the beak) is flesh-colored. Feet are a smoke-grey color. One individual collected was measured: weight of 323 grams, body length of 275 mm, unflattened wing-length of 209 mm, tail length of 100 mm, tarsus-length of 56.6 mm and width of 6.0 mm, and a beak length from the cere of 11.6 mm.<p>The call of the red owl is similar to that of the barn owl. They make a 1.5 – 2.0 second long screeching hiss that is an even frequency with a slight downward frequency towards the end. This slight decrease in frequency at the end of the call distinguishes the red owl from the barn owl.<p>The red owl will produce a call when leaving the roost site, immediately after leaving the roost site, and in response to other red owls throughout the night.
分类信息
Genus: Tyto; Family: Tytonidae; Order: Strigiformes.
- 学名
- Tyto soumagnei
- 命名信息
- (Grandidier, A, 1878)
- 目
- Strigiformes
- 科
- Tytonidae
- 属
- Tyto
分布与栖息地
The observed range of the red owl has been evolving frequently with an increase in surveys and observation since its rediscovery in 1993. The first known nest found was in August 1995 near Ambanizana, Madagascar. Initial surveys restricted populations in the north and extreme east of the island. Recent sightings have ranged from northern Madagascar, along the eastern half of the island, and more recently in the extreme southeast lowlands of Tsitongambarika. The sightings cover a fairly wide altitudinal range, from sea level to 2,000 m. Because of this expansion in observed range, it has been proposed that the red owl may be more reclusive rather than extremely rare. This has been disputed, but if the overall number of individuals is low, whether due to patchy distribution and/or low population density, it is still appropriate to consider the species vulnerable or endangered. A conservative estimate of the current population is 3,500 – 15,000 individuals with a decreasing trend. A population towards the lower side of population estimate may be true based on the relatively few number of sightings throughout history despite more extensive survey work.<p>With wider distribution, the difficulty detecting the species may stem from these factors: <p>The red owl inhabits dry deciduous forests to humid evergreen forests. They prefer to roost on rock ledges in ravines and cave entrances that are near degraded primary and secondary vegetation. Roost sites are typically at least 3.7 m from the ground. The species appear to prefer areas along the forest edge and slightly to heavily disturbed habitat, including rice paddies and tavies (areas where the forest has been cleared and burned to make way for cultivation). Their home ranges, roost sites, and hunting range typically encompass this type of habitat. An individual red owl has never been recorded to be in a closed canopy forest or a mature forest stand.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
其他鸟类
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Reunion Gray White-eye
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An unusual white-eye that lacks white around the eye, but has a puffy white rump patch. The coloration is highly variable, with four morphs occupying largely separate distributions. Can be mostly brown, mostly gray, or a mix of the two. Found in virtually all habitats with woody vegetation on the island of Reunion. A conspicuous, sociable bird that is usually found in flocks. Vaguely similar to Reunion White-eye, but easily separated by the lack of a white eye-ring and the lack of olive-green in the plumage. The song is a repetitive series of warbling notes, typical of a white-eye. The calls are rattling and squealing notes.
Gray-headed Sunbird
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An odd warbler-like sunbird with a long, only slightly downcurved bill. Mostly olive-green with a gray head and a pale throat. Males have a small red tuft at their shoulder that is usually hidden. Found in rainforest at low and middle elevations, mostly in thick growth at middle levels. Similar to longbills, but more olive-green than Gray Longbill and less yellow below than Yellow Longbill. Vocalizations include a rising and falling twittering as well as dry “tip” notes.
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