Violet-fronted Brilliant
Heliodoxa leadbeateri
Chunky, stout-billed hummingbird of mid-elevation cloud forest. Plumage is mostly glittering emerald-green. Male has blue or violet forehead and iridescent green throat that appears dark from most angles. Female has white scaling on underparts and white mustache stripe. Young birds may have a coppery tinge on face and throat. Usually found alone inside forest or at forest edge; visits feeders in some areas.
识别特征
The violet-fronted brilliant is 11 to 13 cm (4.3 to 5.1 in) long. Males weigh 7.1 to 8.5 g (0.25 to 0.30 oz) and females 6.6 to 7.5 g (0.23 to 0.26 oz). Both sexes have a medium length, almost straight, black bill, a white malar streak, and a small white spot behind the eye. They both have a forked tail but the female's is less deeply indented than the male's.<p>Males of the nominate subspecies have bronzy green upperparts with a glittering blue forehead and a coppery neck. They have a glittering emerald green gorget and a dull bronzy green breast and belly. The central pair of tail feathers are bronzy green, the next pair steel blue with bronze tips, and the rest dark steel blue. Females have coppery green upperparts with a glittering green forehead. Their underparts are white transitioning to buffy on the belly, and the throat and breast are thickly spotted with glittering green. The tail feathers have white tips.<p>Males of subspecies H. l. parvula have a violet forehead and a paler and duller belly than the nominate. Their central tail feathers are lighter and greener than the nominate's and the rest more blackish. The female's belly has a cinnamon buff background. H. l. sagitta males have a blue forehead, a bluish breast, and the rest of the underparts and the tail like those of parvula. Females have a blue patch on the crown and an almost white belly. Males of H. l. otero have less coppery upperparts than the nominate; females have a brownish belly and little or no glittering on the forehead.
分类信息
The violet-fronted brilliant has four subspecies:
- 学名
- Heliodoxa leadbeateri
- 命名信息
- (Bourcier, 1843)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Heliodoxa
分布与栖息地
The subspecies of violet-fronted brilliant are found thus:<p>The species inhabits a variety of landscapes, mainly in the tropical and subtropical zones. It mainly occurs in the interior and edges of pre-montane rainforest and cloudforest, but is also found in scrub, clearings, secondary forest, and coffee plantations. In elevation it ranges between 400 and 2,400 m (1,300 and 7,900 ft).
- 迁徙
- Resident species
行为
The violet-fronted brilliant is sedentary.<p>The violet-fronted brilliant forages mostly in the lower to middle strata of the forest, typically below 10 m (30 ft). Unlike some other brilliants, it forages alone and does not share flowering trees with others. In addition to nectar, it also feeds on insects captured by hawking. Insects are a substantial part of its diet though details of the plants that it frequents are lacking.<p>The violet-fronted brilliant's nesting season spans from January to May. No other information about its breeding phenology has been published.<p>What is thought to be the violet-brilliant's song is "a continuous series of single strident 'chup' or 'tchep' notes". It also makes "a repeated, bright, descending phrase 'whee-tsee-tsee-tsew' that sounds like a jerky twittering."
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
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