Buff-tailed Coronet
Boissonneaua flavescens
Medium-sized hummingbird, mostly dark green with obvious buffy underwing and mostly buffy tail. Fairly short, straight bill. Sexes similar. Found in cloud forest from Venezuela to Ecuador, mostly from 1,500–2,400 m. Usually forages in middle to upper levels of trees. Visits feeders, where it aggressively defends its territory against other hummingbirds.
识别特征
The buff-tailed coronet is 11 to 12 cm (4.3 to 4.7 in) long and weighs 7.3 to 8.8 g (0.26 to 0.31 oz). Both sexes have a short, straight, black bill and a small white spot behind the eye. Males of the nominate subspecies are mostly shining green, with a buff belly spotted with green. The underwing coverts are cinnamon and show in flight. The central tail feathers are bronzy and the rest buff with bronze tips and edges. It has small white tufts on the legs. The nominate female has more buff on the underparts and the bronze of the tail is less extensive. The buff parts of both sexes of B. f. tinochlora have a cinnamon cast and there is more bronze on the tail feathers' tips.<p>
分类信息
The buff-tailed coronet shares genus Boissonneaua with two other coronets, the chestnut-breasted (B. matthewsii) and velvet-purple (B. jardini). It has two subspecies, the nominate B. f. flavescens and B. f. tinochlora.
- 学名
- Boissonneaua flavescens
- 命名信息
- (Loddiges, 1832)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Boissonneaua
分布与栖息地
The nominate subspecies of buff-tailed coronet is found from the Andes of western Venezuela's Mérida state south and west through all three Andean ranges of Colombia. B. f. tinochlora is found from southwestern Colombia south along the west slope of the Andes as far as Cotopaxi Province in central Ecuador and also in a few places on Ecuador's eastern Andean slope. The species inhabits the interior and edges of humid to wet montane forest, cloudforest, and elfin forest. It also occurs in more open shrubby landscapes. In elevation it ranges from 2,000 to 3,500 m (6,600 to 11,500 ft).
- 迁徙
- Resident species
行为
The buff-tailed coronet is sedentary.<p>The buff-tailed coronet is highly territorial, though it may share feeding at a flowering tree with other hummingbirds. It typically forages in the mid-story but also feeds in the canopy. Its main nectar sources are in genera Cavendishia, Palicourea, Disterigma, and Huilaea. It feeds by clinging to the flower, holding its wings open for a second or two after landing. In addition to nectar it captures small insects by hawking from a perch.<p>Buff-tailed coronet breeding behavior has been recorded between November and March. It builds a cup nest of moss and lichen that is usually attached to a branch between 3 and 10 m (10 and 30 ft) above the ground. The female incubates the clutch of two eggs.<p>What is thought to be the buff-tailed coronet's song is "a continuous series of single high-pitched 'tsit' notes". It sometimes sings with several others of its species nearby. It also makes a "squeaky twittering, with rising piping notes and stuttering rattles", especially when interacting with other hummingbirds.
保护状况
- 种群趋势
- unknown
照片
分布
鸟叫声
其他鸟类
Agile Tit-Tyrant
Uromyias agilis
A small, relatively long-tailed flycatcher found in the Andes from western Venezuela to southern Ecuador. Usually looks disheveled with messy streaking below, a diffuse white eyebrow, and a darker mask. Note the absence of wingbars. Also note pale lemon-yellow belly and slight shaggy crest (usually held down). Typically found in small flocks that forage actively in the understory, sometimes following a mixed-species flock. Not particularly difficult to see, although sometimes stays hidden in a patch of bamboo. Occurs in scrubby temperate forest and edges from around 2,600 to 3,500 m. Listen for trills and excited squeaks.
Northern Royal Albatross
Diomedea sanfordi
Huge albatross of the Southern Ocean; breeds mainly on Chatham Islands in New Zealand, but ranges widely. Especially numerous in Humboldt Current off western South America. Easily separated at a distance from smaller albatrosses by white back. From the Wandering Albatross complex (including Snowy, Tristan, Antipodean, and Amsterdam Albatrosses) by uniformly dark upperwings at all ages with otherwise clean white appearance (including mostly white tail, occasionally with small black markings). This combination of features is never shown by Wandering-types, and Northern Royal never has dirty brownish markings on head and body or a mostly black tail. At close range, note the diagnostic narrow black “lips” on cutting edge of bill, lacking on Wandering-types. Also note slightly longer, thinner bill and shallower forehead, which give Northern Royal a “snoutier” look than Wandering-types. Very similar to Southern Royal Albatross; best separated by uniformly dark upperwings, especially on the leading edge. Youngest Southern Royals can also have dark upperwings with very narrow white leading edge; can require close scrutiny or good photographs to identify with confidence. Range averages further north than Southern Royal, but some overlap.
Fulvous Parrotbill
Suthora fulvifrons
Small, ornate parrotbill with a pale belly and a long gray eyebrow. Orange overall with dark wing panels and a variable amount of white on the face. Central Chinese birds have a white face patch, while southern Chinese and Himalayan birds are limited to a short and largely unnoticeable white stripe under the cheek. Moves in large flocks through bamboo stands in coniferous and mixed foothill and montane forests. Lacks the dark throat of Black-throated and Golden Parrotbills.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。