Bahian Nighthawk
Nyctiprogne vielliardi
Distinctive chestnut nighthawk, lacking white marks on either the tail or wings, and barred below. Found in caatinga woodland along rivers across a restricted distribution. The song is a double-noted "whuip-purr." In flight, gives a “whip" call.
识别特征
Once a plain-tailed nighthawk is fully grown, their plumage is dark with brown, the long upper-wings are black, it has gray and white in its upper parts and breast but the characteristic that distinguishes it from the band-tailed nighthawk is that its tail is black without
分类信息
- 学名
- Nyctiprogne vielliardi
- 命名信息
- (Lencioni-Neto, 1994)
- 目
- Caprimulgiformes
- 科
- Caprimulgidae
- 属
- Nyctiprogne
分布与栖息地
The Plain-tailed Nighthawks are only found in Brazil in only two currently known localities. One runs along the rio São Francisco and immediately adjacent tributaries in Bahia and in the state of Minas Gerais which are in central Brazil.<p>The Plain-tailed nighthawk can be classified as near threatened due to loss of riverine forest and scum which lie within its small range..
- 迁徙
- Resident species
行为
There is not much information about the Plain-tailed nighthawk because it is a newly identified species but it is known that they are crepuscular (active at dawn and dusk) and nocturnal (active at night) and they sleep on the ground where they can easily camouflage.<p>They have been observed above the river in flocks of up to 20 individuals during dusk hours.<p>A plain-tailed nighthawks diet consists mainly of insects which it finds in swarms. It also can catch a drink a water by swooping down slowly on a surface of water. [1]<p>To attract females, the male Plain-tailed nighthawk sings. He also sings after he has marked his territory in order to protect it from intruders.<p>The Plain-tailed nighthawk does not construct nests but instead it lays its eggs in an unlined depression on the ground. They may lay about one to two eggs, but primarily two, that are a white/creamy color with dark colored spots in order to better camouflage with the ground. The female incubates the eggs during the day while both parents incubate it at night for approximately 19 to 21 days. The male is primarily in charge of protecting the nest from any predators or other intruders. the parents feed the chicks mainly insects until they are able to leave the nest in about 20 to 21 days.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
White-winged Tern
Chlidonias leucopterus
Buoyant “river tern” with dramatically different breeding and non-breeding plumages. Breeding adult is wildly conspicuous in flight, with contrasting black-and-white plumage; at rest note white shoulders contrasting with black body. Non-breeding and younger birds are white with gray patches and black “earmuffs.” In areas of overlap, juvenile told from Black Tern by dark back contrasting with lighter upperwings and white rump and by black marking above the shoulder. Non-breeding Whiskered Tern can be similar, but has a faded, patchy dark crown instead of earmuffs. Commonly found in flocks around rivers, lakes, and wetlands, where it picks food from surface instead of splash-diving; generally not as closely associated with saltwater as many typical terns.
Crested Doradito
Pseudocolopteryx sclateri
A small flycatcher with bright yellow underparts, a shaggy crest, and three wingbars. Inhabits marshes and flooded grasslands with overgrown vegetation. The song is a very soft and squeaky series of “tsik-tsik-tsee-lee” notes. Other doraditos have no wing marks.
Dark-winged Miner
Geositta saxicolina
Plain bird found in treeless areas of the high Andes of central Peru. Plumage is sandy brown with a buffy tinge on the face and breast. The buff rump is usually only evident in flight. Distinguished from Common Miner by its unstreaked breast. Similar to some species of cinclodes, but does not have a white throat and lacks eyebrows. Feeds on the ground, and often perches up on rocks.
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