Gray-winged Trumpeter
Psophia crepitans
Chicken-sized and oddly proportioned terrestrial bird of tall rainforest that is common where not hunted. Peculiar shape, behavior, and tendency to occur in large groups render this species difficult to mistake for any other. Groups walk through forest, flicking wings nervously while feeding on insects, small vertebrates, and fallen fruit. Often seen crossing roads through forested regions. Can be extremely noisy, especially when startled; bizarre calls include a variety of grunts, wails, and screams.
识别特征
The grey-winged trumpeter is a chicken-like bird with a long neck and legs and a hump-backed profile. It is 45 to 52 centimetres (18 to 20 in) long. Two males weighed 0.82 and 1.02 kg (1.8 and 2.2 lb) and six females weighed between 0.79 and 1.06 kg (1.7 and 2.3 lb). The sexes are similar in appearance. Their stout, slightly decurved, bill is yellowish green and their legs and feet greenish olive. Their plumage is mostly black. The nominate subspecies has green or violet iridescence on the lower neck. Its inner wings and rump are ashy gray and the middle of the back is ochre to chestnut. Subspecies P. c. napensis has bronzy or purple iridescence, lighter gray wings and rump, and a more ferruginous back. P. c. ochroptera has entirely ochraceous wings, rump, and middle back.
分类信息
The grey-winged trumpeter's taxonomy is unsettled. The International Ornithological Committee (IOC), the South American Classification Committee of the American Ornithological Society, and the Clements taxonomy assign it three subspecies: the nominate P. c. crepitans, P. c. napensis, and P. c. ochroptera. Some authors treat P. c. ochroptera as a subspecies of the pale-winged trumpeter (P. leucoptera) and BirdLife International's Handbook of the Birds of the World treats it as a separate species, the ochre-winged trumpeter. In addition, there has been some suggestion that the other two subspecies also warrant treatment as species.<p>This article follows the three-subspecies model.
- 学名
- Psophia crepitans
- 命名信息
- Linnaeus, 1758
- 目
- Gruiformes
- 科
- Psophiidae
- 属
- Psophia
分布与栖息地
The grey-winged trumpeter is a bird of the northern Amazon Basin. The nominate subspecies is found from southeastern Colombia east through eastern and southern Venezuela and the Guianas and south into Brazil to the Amazon River east of the Rio Negro. P. c. ochroptera is found in northwestern Brazil north of the Amazon and west of the Rio Negro. P. c. napensis is found from southeastern Colombia south through eastern Ecuador into northeastern Peru and east into extreme northwestern Brazil north of the Amazon.<p>The grey-winged trumpeter inhabits dense lowland tropical rainforest. Within that broad category it favors landscapes away from human habitations and with an open understory and many fruiting trees. Despite being mostly a bird of the lowlands it sometimes can be found in higher elevation cloudforest.
- 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
White-collared Pigeon
Columba albitorques
A dark pigeon that is endemic to the Abyssinian highlands. There is a white mark on the back of the head, and white patches in the wings that are conspicuous in flight. Found at middle and high elevations. Nests in rocky areas as well as in towns and cities, and feeds mainly in grassland and cultivated areas. Can be similar to the highly variable feral Rock Pigeon, but distinguished by the white mark on the head. Not very vocal, but does sometimes give a low cooing call.
Red-fronted Parrotlet
Touit costaricensis
Small parrot with short square tail. Mostly green with red forehead and shoulder. In flight, partially yellow underwings and yellow in tail are visible. Restricted range; prefers montane forests, where it forages inconspicuously in the canopy and is sometimes seen in pairs or small flocks in flight. Combination of small size and tail shape is distinctive in range. Feeds on fruit.
Oriole Finch
Linurgus olivaceus
Odd and unique member of the waxbill family. Males are yellow and olive-green with a black head; females are olive-green. Both sexes have a pink bill. Males vary geographically in how yellow or olive-green their back is, how much orange they show below, and whether or not they have a yellow collar. Found in and around montane forest, usually in pairs or small groups. Quiet and inconspicuous bird. The call is a sharp “tsik.” Males have a similar pattern to some weavers but are separated by their pink bill. Also similar to orioles, but much smaller.
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