Choco Toucan
Ramphastos brevis
Large black and yellow toucan with a yellow stripe on the top of the bill. Inhabits lowland and foothill rainforest west of the Andes. Similar to chestnut-mandibled races of Yellow-throated Toucan, but with black on the lower part of the bill. This can be hard to distinguish in poor light, so voice is often the best way to ID: it makes a rasping or croaking call instead of a yelp.
识别特征
The Choco toucan is 46 to 48.5 cm (18 to 19 in) long and weighs 365 to 482 g (13 to 17 oz). The sexes are alike though the female's bill is shorter than the male's. Their bill's maxilla is mostly yellow with some green on the culmen and a black triangle at its base. Their mandible is black, sometimes with a yellow tip. Their crown and nape are black with a maroon tinge; their upperparts and tail are black except for white uppertail coverts. Bare yellow-green to olive green skin surrounds their eye. Their throat and breast are yellow with a narrow red band below the breast. Their belly is black and their undertail coverts red. The plumage is almost identical to that of the "chestnut-mandibled" subspecies of yellow-throated toucan (R. a. swainsonii), with which there is a range overlap, but their voices separate them.
分类信息
The Choco toucan was long treated as a subspecies of the yellow-throated toucan (R. ambiguus) but vocal differences and other characteristics led to their being split. It and the channel-billed toucan (R. vitellinus) are sister species. The Choco toucan is monotypic.
- 学名
- Ramphastos brevis
- 命名信息
- Meyer de Schauensee, 1945
- 目
- Piciformes
- 科
- Ramphastidae
- 属
- Ramphastos
分布与栖息地
As suggested by its common name, the Choco toucan is restricted to the humid Chocó region from northwestern Colombia to southwestern Ecuador. It mostly inhabits lowland and foothill forest but also occurs in pastures and plantations with fruiting trees that adjoin forest. In elevation it is found up to about 1,550 m (5,100 ft).
- 迁徙
- Resident species
行为
The Choco toucan does not have a migratory pattern, but pairs and groups move up- and downslope while foraging.<p>The Choco toucan forages mostly in the forest canopy. Its diet is not known in detail but is mainly fruits and probably includes insects and small vertebrates. It has been noted following army ant swarms, probably to feed on prey disturbed by them.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
African Barred Owlet
Glaucidium capense
Chunky brownish owlet. Shows bars on the breast and spots on the belly. There is significant though subtle geographic variation. The back can be solidly chestnut or brown and barred, the back of the neck is barred, and the top of the head is either spotted or barred. Found in a variety of forest, from lowland rainforest to montane forest, as well as in thickets, and thick woodland. Often active and vocal during the day. Gives a yelping series of hoots, which are usually followed by emphatic, modulated, descending “ptrrrrr” notes. Similar to Pearl-spotted Owlet but has barring rather than spotting on the upperparts, and spots and bars rather than streaking on the underparts. Very similar to the rare Albertine Owlet, but in the area of overlap, has white rather than cream spotting on top of the head, a less richly-colored chestnut back, and a white rather than buff slash across the shoulder. Also reminiscent of Red-chested Owlet, but larger, with a barred chest, and lacks white spots on the tail.
Javan Scimitar-Babbler
Pomatorhinus montanus
An attractive, fierce-eyed babbler of tropical montane rainforest. Black head with thin, white eyebrow, white from the throat to mid-belly, contrasting strongly with remaining dark maroon body. Note the slightly decurved, yellow bill. Forages in noisy, small groups through the midstorey. Unmistakable if seen well. Calls variable, but commonly gives a soft “wu-tu” followed by a rising “whit!”, quickly repeated. Groups also give an excited chatter.
Varzea Thrush
Turdus sanchezorum
Large, gray-brown thrush. Note the white throat streaked with brown and the yellow bill. Inhabits seasonally flooded forest, and locally also savanna and white sand forests, where it mostly forages at lower levels. The song is slow, with whistled notes, and the species also makes mewing calls and rapid “cuk” notes. The similar Hauxwell's Thrush and Black-billed Thrush have black bills.
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