Savanna Nightjar

Caprimulgus affinis

Well-camouflaged nightbird, usually encountered roosting on gravel riverbeds, open areas in grasslands, rooftops, or roadsides. Sometimes found in small loose flocks when roosting. Fairly well adapted to urban life in some parts of its range and often found in towns and city edges. Intricately patterned gray-brown with less white than other nightjars; only males have a fairly small white patch on the wing near the tip. Most often detected by its distinctive, high-pitched, burry “chree-ik” song, repeated over and over.

识别特征

Its length is about 25 cm (9.8 in), with a wingspan of 64 cm and a body weight of 54-110g. The upperparts are brownish-grey and vermiculated, with pale brown speckles. The underparts are brown, with bars. The savanna nightjar is nocturnal and is recognizable by its characteristic loud chirping calls, mainly given in flight during the evening. Their acoustic features change and can preadapt based upon their habitat.

分类信息

学名
Caprimulgus affinis
命名信息
Horsfield, 1821
Caprimulgiformes
Caprimulgidae
Caprimulgus

分布与栖息地

Its habitat is open forest and areas with scrub. However, it has recently moved gradually into the metropolitan areas of Taiwan, probably due to the absence of natural predators in that setting. Habitat loss is likely also a significant factor. Impacts of this relocation have included disturbed sleep for residents—due to male savanna nightjars' loud vocalizations at night from January to July—and collisions with aircraft. It is predicted to continue this habitat shift and expand its range into all major western Taiwanese cities.

迁徙
Resident species

保护状况

种群趋势
stable

照片

分布

鸟叫声

其他鸟类

Burchell's Coucal

Burchell's Coucal

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A large, robust, ungainly cuckoo with rufous wings and a long, broad tail. The underparts and back are streaked, and it has a distinctive white eyebrow. The rump and upper tail coverts are barred, unlike other coucals. It often moves clumsily, preferring to clamber about in rank vegetation or walk on the ground foraging for insects or small vertebrates. Its flight is labored and heavy. This species uses a wide variety of habitats with a thick understory, including savanna, woodland, forest edge, and wetlands. The song is a descending bubbling series, “bu-bu-bu bu bu bu bu”, that falls and then rises in pitch.

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