Black-headed Trogon
Trogon melanocephalus
Handsome, medium-size, yellow-bellied trogon of tropical lowlands. Occurs in forest, but also in hedgerows, semi-open areas with taller trees, mangroves; not as tied to forest as is smaller Gartered Trogon. Perches at mid-upper levels, at times with several birds in a small area. Both male and female have a complete blue-gray eye-ring, and the underside of the tail is marked with big blocks of white. Digs its nests in arboreal termite nests.
识别特征
The black-headed trogon is 27 to 28 cm (11 to 11 in) long and weighs about 74 to 95 g (2.6 to 3.4 oz). Adults of both sexes have slate-black to black head, neck, and chest. A sky-blue ring of bare skin surrounds the dark eye. A thin white line separates the chest from the rest of their underparts, which are cadmium to chrome yellow that becomes lighter at the vent area. The two inner pairs of tail feathers are metallic bronze breen to bluish green with black tips. The next pair are all black and the outermost three pairs are black with wide white tips. Their wings are slate black with some white. Adult males' upperparts are bright metallic bluish green to golden green with metallic blue to bluish violet rump and uppertail coverts. Adult females replace the male's metallic upperparts with dark slate.<p>Immature males have a mostly black tail with a limited amount of white and their wings have more white than adults'. Immature females' tails lack the black tips on the inner tail feathers, and like immature males also have less white on the tail than adults.
分类信息
The black-headed trogon is treated as monotypic by the International Ornithological Committee and BirdLife International's Handbook of the Birds of the World. However, the Clements taxonomy assigns it two subspecies, the nominate T. m. melanocephalus and T. m. illaetabilis.<p>This article follows the monotypic model.
- 学名
- Trogon melanocephalus
- 命名信息
- Gould, 1836
- 目
- Trogoniformes
- 科
- Trogonidae
- 属
- Trogon
分布与栖息地
The black-headed trogon is found on the Caribbean slope from southern Veracruz in Mexico south through Belize, northern Guatemala, and northern Honduras to central Nicaragua. It is also found on the Pacific slope from El Salvador through southern Honduras and western Nicaragua into northwestern Costa Rica. The species inhabits a variety of forest types including wet and moist tropical forest, pinelands, gallery forest, secondary forest, and dry forest. It favors the forest edges rather than the dense interior and is also found in other semi-open to open landscapes including banana and cacao plantations, gardens, and suburban areas. In elevation it usually is found between sea level and 600 m (2,000 ft) but does occur as high as 1,000 m (3,300 ft)
- 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
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Impressive hummingbird of Andean cloud forest in northwestern Ecuador and western Colombia. Large, thick-billed, and long-tailed, with golden sheen on the belly. Male has a violet throat patch, and female has white on throat and breast. Young birds have a rusty wash on face and throat. Favors very wet, epiphyte-laden forest, and visits feeders in some areas.
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A small, short-tailed weaver with a mottled back and a yellow or reddish bill, eye-ring, and legs. When breeding, the male develops a variable black face mask with a surrounding wash that can be rosy, buff, or cinnamon, although the face can also be whitish. Large flocks are resident and nomadic in arid savanna, grassland, and cultivated areas. In wetter years this species forms enormous flocks numbering tens of thousands, earning it the name “feathered locust.” Non-breeding Red-headed Weaver is superficially similar, but it is much larger than Red-billed Quelea, and it is mostly solitary in woodland and has an unstreaked back.
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