Pin-tailed Green-Pigeon
Treron apicauda
Like other green pigeons, usually seen flying overhead or perched in a fruiting tree. Green overall with a neon-blue bill and bright red feet. Sexes are similar, but males have a faint orange wash on the chest that females lack. Very long, sharp-tipped tail is diagnostic and evident both when in flight and when perched. Usually seen in pairs or small to medium-sized flocks in hill forest. Generally quiet; occasionally gives a high fluty “doo!” followed by two to three deeper coos.
识别特征
The pin-tailed green pigeon is a medium sized dove, with an average weight of 185-255 grams. Males are 32-36 cm and females are typically 28 cm. It is yellow-green overall, with darker green wing-coverts and scapulars and black outer secondaries and primaries. The males have a golden breast with pinkish hues. The central tail feathers are a bluish-gray and the undertail-coverts a chestnut color. The orbital ring is blue, as is the bill, with a lighter green or yellow tip. The legs and feet are a bright reddish-pink. The females are a duller yellow, with much shorter central tail feathers and dull undertail-coverts. <p>The song is described as a soft whistling ku-koo, which is usually paired. The pin-tailed green pigeon also lets out a high pitched doo! call. While in flight, feathers produce a whirring sound.
分类信息
The pin-tailed green pigeon was first described by Edward Blyth in 1846. The species' generic name comes from the Greek trērōn (timid, shy dove), while the specific epithet apicauda is derived from a combination of the Latin apicis (apex or point)[citation needed] and the Latin cauda (tail). The pin-tailed green pigeon was placed in the genus Sphenerus in the past. <p>There are three recognized subspecies of the pin-tailed green pigeon.
- 学名
- Treron apicauda
- 命名信息
- Blyth, 1846
- 目
- Columbiformes
- 科
- Columbidae
- 属
- Treron
分布与栖息地
The pin-tailed green pigeon is found in Bangladesh, Bhutan, Cambodia, China, India, Laos, Myanmar, Nepal, Thailand, and Vietnam. It inhabits secondary growth and forest, including foothill forests, subtropical and tropical dry forest, and evergreen rainforest. It typically inhabits areas 0 to 1800 meters in elevation. <p>Pin-tailed green pigeons are resident birds in some parts of their range, and nomadic in other parts in response to food resources. In central Vietnam, they will descend to lower elevations during the dry season, which is when many trees are fruiting.
- 迁徙
- Complete migrants
行为
The pin-tailed green pigeon is frugivorous, feeding mainly on fruits and berries in an acrobatic fashion. The species is gregarious, forming feeding flocks varying from 10-30 birds. Flocks have been observed descending to the ground to visit salt licks. <p>Nesting has been observed in April, May, and June in the Himalayan foothills. In other parts of Southeast Asia, pin-tailed green pigeons have been observed breeding year round. The female lays two white eggs in a platformed twig nest, usually 5-6 meters off the ground. Nests have been observed in bamboo thickets, trees, and shrubs. Both parents incubate and feed the young. Individuals have a generational length of approximately 4.2 years.
保护状况
The pin-tailed green pigeon was assessed by the IUCN in 2018 and was listed as a species of least concern, though the population trend is decreasing. Species is thought to be common across much of its range, though sightings are limited. Scarce in Thailand, and reported as very rare in Bangladesh.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Crimson Seedcracker
Pyrenestes sanguineus
A chunky-billed brown finch with an electric-red rump, red tail, and red hood that extends from the throat to the nape; the hood of the male is larger than the female’s and extends down the flanks. Juvenile is duller than the adult. A secretive and uncommon resident restricted to Upper Guinea, found in pairs in swamp forest, scrub near creeks, and thickets near water in primary and secondary forest; also sometimes in cultivation. Song is a variable series of buzzes and whistles, and call is a strident “tsut…tsut.” Male Black-bellied Seedcracker differs from Crimson by having a black (not brown) back and belly; females and juveniles are almost identical but only overlap in eastern Ivory Coast.
Barred Wren-Warbler
Calamonastes fasciolatus
Long-tailed brownish warbler. In all plumages, shows heavy barring below, but this barring is obscured by a brown band across the breast of breeding males. Generally uncommon in arid, thorny savanna. Often raises its tail in wren-like fashion. Normal song is a vibrating, metallic note that is frequently repeated. Another vocalization is a repeated two-part “gid-yup.” Similar to Miombo Wren-Warbler, but has little overlap in range and separated by dusky underparts and darker eye.
Rufous-bellied Seedsnipe
Attagis gayi
Chunky, generally uncommon, rather grouselike bird of the high Andes. Found in pairs or small groups on bogs, stony slopes, and in bleak moorland of puna and páramo zones. Lacey “chainmail” pattern to upperparts is beautifully cryptic, and birds sometimes freeze when alarmed making them more difficult to see. No similar species in range; note the short stout bill and rusty underparts. Flight strong and fast, and flushes with loud shrieking choruses.
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