Mountain Imperial-Pigeon
Ducula badia
Large elegant pearl-gray pigeon with dark wings. Inhabits mature forests in foothills and montane areas; can be found down to sea level in western India. Forages in upper levels of forest, often in small flocks. Flies powerfully over the canopy. Song is deep and resonant: “ouh-woOO WOO.”
识别特征
The mountain imperial pigeon is the largest pigeon species in its range at 43–51 cm (17–20 in) long. It has a fairly long tail, broad, rounded wings and slow wing-beats. The head, neck and underparts are vinous-grey with a contrasting white throat and brownish-maroon upperparts and wings, though the upper part of the body can be duller. The underwing is slate-grey and the tail is blackish with a grey horizontal line. The combination the maroon back with the large size give this species a distinctive appearance. Its call consists of a deep, resonant boom that is only detectable at close range.
分类信息
The Malabar imperial pigeon (D. cuprea) of India's Western Ghats was formerly considered conspecific, but was split as a distinct species by the IOC in 2021.
- 学名
- Ducula badia
- 命名信息
- (Raffles, 1822)
- 目
- Columbiformes
- 科
- Columbidae
- 属
- Ducula
分布与栖息地
The pigeon has a wide range in south-eastern Asia, where it occurs in Bangladesh, Bhutan, Brunei, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, and Vietnam. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical mangrove forests, and subtropical or tropical moist montane forests. It may be found from sea level to elevations of 2,550 m (8,370 ft) in the Himalayas and 2,200 m (7,200 ft) on Sumatra. Being mainly a foothill bird, it probably only breeds above an elevation of 500 m (1,600 ft), although feeding flocks below this are common. It is usually found in old-growth forests. The species is generally fairly common where extensive stands of forest remain.
- 迁徙
- Resident species
行为
Though usually solitary, this species has been seen in groups numbering up to 20, especially when going to roost or flying up or down in mountains. They can be difficult to see, since they spend their time usually in high canopy and usually fly fairly high over the canopy.<p>During the breeding display, calling birds puff up their throats considerably while singing and bow to potential mates. Then the displaying bird engages in a vertical flight up from the perch, up 6 to 8 m (20 to 26 ft) into the air, and then glide back down with wings and tail widely spread. In the Northern stretches of the species range, breeding is from March to August, while in the southern parts of India and southeast Asia, they breed from January to May. The nest is usually in a fairly small tree, about 5 to 8 m (16 to 26 ft) off the ground, and is a flimsy platform. One, or rarely two, eggs are laid and both parents incubate. They only leave the nest if highly pressed.<p>They feed on fruits and berries, especially figs and nutmeg, which are plucked and swallowed whole. They will occasionally go to the ground to drink, as in Bornean mangroves where up to 200 or 300 of these pigeons have been flushed at once. There may be a partial altitudinal movement in some parts of their range, in pursuit of ideal feeding conditions.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Gray-headed Swamphen
Porphyrio poliocephalus
A very large bluish-purple waterbird with a red bill and forehead shield, as well as red legs and feet with long toes. The tail is flicked up often, revealing fluffy white “underpants.” Juveniles are duller than adults and lack the red bill and shield. An inhabitant of marshy, vegetated freshwater bodies such as swamps, rivers, and lakes; usually in small groups. Feeds, often clumsily, at muddy water edges, in reeds, and on floating vegetation. Makes short nasal grunts and croaking sounds. Formerly part of the species known as Purple Swamphen.
Pale-footed Bush Warbler
Hemitesia pallidipes
A retiring warbler of densely vegetated forest edges, lightly wooded slopes, and clearings in foothill to montane regions; favors areas with thick ground vegetation. Dull and unremarkable to look at; plain brown above and paler brown below, with a white throat and eyebrow. More contrastingly marked than Brownish-flanked Bush Warbler; smaller and stouter than Manchurian and Japanese Bush Warblers. Song is what sets it apart: a sharp note followed by a quick bout of chattering and squeaking.
Chinese Gray Shrike
Lanius sphenocercus
A beautiful silvery shrike with gray upperparts, white underparts, a black mask, and white in the wings. The white patches in the black wings and tail are especially conspicuous in flight. Found in open areas with scattered or scrubby vegetation, frequenting agricultural fields in the winter; often sits on tall and exposed perches. Vocalizations include harsh rasping notes and more musical, liquid ones. Can be similar to the smaller Northern Shrike, but look out for Chinese’s gray rump, slender pale eyebrow, and more extensive mask. Also similar to Giant Shrike, but smaller, with a paler gray back and a white eyebrow.
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