Fan-tailed Raven

Corvus rhipidurus

This medium-sized all-dark crow has a unique batlike silhouette. When perched the tail seems normally-proportioned, but in flight it tail appears extremely short. Bill is short and heavy. Lives on high desert cliffs. Extremely aerobatic and often in medium-sized groups. Gives a high-pitched croak.

识别特征

The fan-tailed raven is completely black including bill, legs and feet and the plumage has a purplish-blue gloss in good light. Worn plumage is slightly coppery-brown. The base of the feathers on the upper neck are white and only seen if the bird is inspected or a strong gust blows them the wrong way. The throat hackles are shorter than in most other ravens. One of the smaller raven species, it is about the same size or slightly larger than the carrion crow, at 47–51 cm, but with a much thicker bill, shorter tail and much larger wings.<p>The voice is described as guttural croaks mixed with the sound of frog-call. Like all corvids, the fan-tailed raven is capable of vocal mimicry; however, this behavior is mostly recorded in captivity and, very rarely, in the wild.

分类信息

Genus: Corvus; Family: Corvidae; Order: Passeriformes.

学名
Corvus rhipidurus
命名信息
Hartert, EJO, 1918
Passeriformes
Corvidae
Corvus

分布与栖息地

It occurs in the Middle East, North Africa, Arabia, and south to Sudan and Kenya. It also ranges across the Aïr Massif in the southern Sahara. It lives in desert or open dry country that includes crags for nesting. It is one of the most aerial of birds traveling huge distances in search of food, its large wings being adapted to gliding on thermals in a rather vulture-like way.

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

鸟叫声

其他鸟类

Brown-crowned Scimitar-Babbler

Brown-crowned Scimitar-Babbler

Pomatorhinus phayrei

A large and vocal babbler of montane rainforest and shrubby edges. Note warm russet brown upperparts, a white throat blending to pale buff underparts, white-bordered black mask, and bright red bill. Forages actively in the dense midstorey, sometimes in mixed species flocks, and can be difficult to see well. Occasionally descends to the ground to rummage through fallen leaves. Can be readily mistaken for the similar Red-billed Scimitar-Babbler, but note Brown-crowned’s thicker bill and pale buff rather than white chest. Often gives harsh grating or excited chattering calls, as well as soft, oriole-like notes.

Philippine Dwarf-Kingfisher

Philippine Dwarf-Kingfisher

Ceyx melanurus

A tiny kingfisher of lowland forests, often near streams. Overall orange, brighter on the underparts and face, with bright red bill and legs, a white throat, belly, and mark behind the cheek, and black stripes down the side of the back. Note the pinkish-purple tinge to the head and chest. Birds on Luzon have a darker wing and a bluish ear. Somewhat similar to Dimorphic Dwarf-Kingfisher, especially when seen from the front or below, but Philippine lacks the bright blue head and back. Voice is a rather sharp, high-pitched note, “tsreek.”

Jungle Nightjar

Jungle Nightjar

Caprimulgus indicus

Gray-brown nightjar of wooded, open grassy, and scrubby areas; not restricted to jungles. Intricately patterned, with a golden patch behind the ear (often not visible on a resting bird) and pale tan spots on the wings. Male shows bright white patches near the wingtips and on the edges of the tail that are buffy-brown in females. Similar Savanna Nightjar is much more densely patterned and lacks the tan wing spots; Savanna also tends to roost on the ground, versus in trees for Jungle Nightjar. Song is utterly alien-sounding and unique: a long series of bouncing “pooKIHpooKIHpooKIH” notes, comparable to a cartoon laser gun.

开始您的观鸟之旅

在户外识别鸟类,并在下一次观察时随手查阅鸟类图鉴。