White-throated Rail

Dryolimnas cuvieri

A big, robust, rather colorful rail. The olive-green back, reddish underparts, and white throat are distinctive. Much less shy than typical rails, and sometimes quite tame. Found on the ground in forest, mangroves, moist scrub, marsh, and rice paddies. Quite vocal; most common call is a very loud, ringing series of rising “schweeet” notes. Larger than wood-rails, with a longer bill and a much larger white throat patch. Also larger than Madagascar Rail, with brighter coloration. 

分类信息

The nominate subspecies is found in Madagascar. A flightless subspecies (sometimes considered a distinct species), Dryolimnas (cuvieri) aldabranus (Aldabra rail), inhabits Aldabra, while the semi-flightless subspecies D. c. Abbott (Assumption rail) from Assumption Island went extinct in the early 20th century due to introduced predators. A fourth extinct flightless subspecies or descendant species is known from fossil remains on Aldabra, and anatomically was almost identical to the Aldabra rail. This subspecies was wiped out by rising sea levels during the Pleistocene, but the atoll was recolonized by the white-throated rail after it resurfaced; this population evolved in a very similar way to the extinct subspecies, eventually evolving into the modern Aldabra rail. This is one of the very few observed instances of iterative evolution, in which a distinct population is wiped out from an area but it is recolonized by members of the source population, who evolve in the same way as the extinct population.<p>It is now the last living member of the genus Dryolimnas, and the Aldabra subspecies is believed to be the last flightless bird in the Indian Ocean. It's natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical mangrove forest.

学名
Dryolimnas cuvieri
命名信息
(Pucheran, 1845)
Gruiformes
Rallidae
Dryolimnas

分布与栖息地

It is found in the Comoros, Madagascar, Mayotte, and Seychelles.

迁徙
Resident species

保护状况

种群趋势
stable

照片

分布

鸟叫声

其他鸟类

Rufous Vanga

Rufous Vanga

Schetba rufa

Chunky mid-sized vanga with boldly rufous, black, and white coloration. Males have a black hood, whereas females have a black cap and white throat. Found in both dry forest and rainforest, though more common in dry forest. Generally sluggish, and often perches at middle levels for long periods. Can become aggressive toward other birds that enter its territory. Large cup nest is often conspicuously placed in a low crotch of a tree. Song is a long, descending, musical trill. 

White-winged Fairywren

White-winged Fairywren

Malurus leucopterus

A small bird with a long blue tail that is held cocked. Breeding males are usually brilliant sapphire blue with bright white wing patches. Females and nonbreeding males are very plain pale gray, and the patch between the eye and bill (lores) is also pale (compared to Purple-backed Fairywren which has very dark reddish lores). This species is typically found in very open and arid country with sparse bushes, where it often perches on the very top of bushes. Its call is a very fast trill.

Fraser's Sunbird

Fraser's Sunbird

Deleornis fraseri

A sunbird masquerading as a warbler, this medium-sized sunbird of forest and forest edge is often found in small groups or mixed-species flocks searching the understory deliberately for insects. Overall yellow-green with more olive tones to the head. Has distinctive pale spectacles around its eye and a large, slightly decurved bill. Could be confused with longbills, but note Fraser’s Sunbird’s decurved bill and noticeable spectacles around the eyes. Calls include a short, dry “tiktiktik!” The song is a longer set of sunbird-like notes with noticeable pauses in between, varying in quality from clear whistles to trills: “dree, djier, drtil, drtil.” 

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