Velvet-purple Coronet
Boissonneaua jardini
This medium-sized hummingbird looks all blackish in poor light, but at the right angle, it turns into a dazzling gem with a purple belly and crown, turquoise sides, and greenish wing coverts. Note bright white flashes in the tail. Like other coronets, it holds its wings up for a few seconds when it lands, exposing rich chestnut underwings. Sexes similar. Very restricted range in western Colombia and Ecuador, where it is generally uncommon in moist cloud forest and edges in the lower subtropical zone. Visits feeders.
识别特征
The velvet-purple coronet is 11 to 12.7 cm (4.3 to 5.0 in) long and weighs 8.0 to 8.5 g (0.28 to 0.30 oz). Both sexes have a short, straight, black bill and a white spot behind the eye. Both have a notched tail, though the female's is less deeply indented than the male's, and both have small white puffs on the legs. Males have a velvety black head with a glittering purplish blue crown; the rest of the upperparts are shining bluish green. The throat is velvety black and the breast and belly glittering purplish blue. The underwing coverts are cinnamon and show in flight. The central tail feathers are black and the rest white with black tips and edges. Females are similar to males but duller overall, and the breast and belly feathers have buff to grayish brown fringes.
分类信息
The velvet-purple coronet shares genus Boissonneaua with two other coronets, the chestnut-breasted (B. matthewsii) and buff-tailed (B. flavescens). It is monotypic.
- 学名
- Boissonneaua jardini
- 命名信息
- (Bourcier, 1851)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Boissonneaua
分布与栖息地
The velvet-purple coronet is found along the Pacific slope of the Andes from southwestern Colombia's Chocó Department to northwestern Ecuador's Pichincha Province. It mostly inhabits the interior and edges of wet mossy primary and secondary forest, but also occurs in shrubby landscapes. It has been recorded between 800 and 1,700 m (2,600 and 5,600 ft) in Ecuador and between 350 and 2,200 m (1,150 and 7,220 ft) in Colombia, but is most common above 1,200 m (3,900 ft).
- 迁徙
- Resident species
行为
The velvet-purple coronet is generally sedentary, but seasonal elevational movements are known from Colombia.<p>The velvet-purple coronet is territorial and defends clusters of flowers from other nectar-feeding birds. It forages at any forest level from the lower strata to the canopy. It feeds by clinging to the flower, holding its wings open for a second or two after landing. In addition to feeding on nectar it captures small insects by hawking from a perch.<p>The velvet-purple coronet's breeding season spans at least from January to March but might extend as far as September. It builds a cup nest of moss and lichen on a horizontal branch or in a small fork. The female incubates the clutch of two eggs. The incubation period and time to fledging are not known.<p>The velvet-purple coronet's courtship song is described as a "series of alternating harsh and soft whistles, 'si, siii, si, siii, si, siii...'".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Cameroon Indigobird
Vidua camerunensis
A nest parasite that lays its eggs in the nests of African and Black-bellied Firefinches and Brown and Dybowski's Twinspots. Breeding males are glossy black with blue iridescence and a pale brownish panel in the wings. Females and non-breeding males are streaky and brown on the back and pale below, with a bold facial pattern. The bill is whitish and the legs very pale purplish. Found locally in lush woodland, savanna, and cultivated areas. Given current knowledge, can only be confidently identified by mimicked vocalizations. Each male parasitizes only one of the four host species and imitates its vocalizations, often mixing them into a scratchy jumble of high-pitched notes.
Asian Emerald Dove
Chalcophaps indica
Brightly-colored dove of the forest floor with bright green wings, coral-red bill, and ash-gray forehead. Male has an extensive silver cap which the female lacks. Inhabits various forested habitats from lowlands up into montane areas. Often encountered when flushed from a well-shaded trail. Gives a series of solemn-sounding hiccuping coos: “ti-woo, ti-woo, ti-woo.”
Elegant Imperial-Pigeon
Ducula concinna
A large pigeon of small islands. Shows a conspicuous pale yellow eye, a pale gray head and underparts, a chestnut vent, and a green back, wings, and uppertail. Found in flocks within the upper levels of forest edges, wooded areas, and plantations. The beady yellow eye is unique for a green pigeon in its range. Further differs from Spectacled Imperial-Pigeon in lacking spectacles and in having a red base to the undertail. Calls include “kuk” notes, a purring “woo-ooo,” a higher-pitched “waaa-aaa,” and growling sounds.
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