Blue-throated Starfrontlet
Coeligena helianthea
Large and dazzling hummingbird found in the Andes of northern Colombia and barely into western Venezuela. Males look dark at a distance, but are unmistakable in good light: dark blackish head and breast with a green forecrown, a purplish-blue throat patch, and a glittering purplish-pink belly. On females, look for a buffy throat, a purplish-pink belly, and a long straight bill. Occurs in montane forests, edges, and gardens; visits feeders.
识别特征
The blue-throated starfrontlet is about 13 cm (5.1 in) long. Males weigh between 7.1 and 7.6 g (0.25 and 0.27 oz) and females 6 to 6.5 g (0.21 to 0.23 oz). Both sexes have a long, straight, black bill and white spot behind the eye. Both have bronzy black forked tails but the female's is less indented than the male's. In poor light the species may appear all dark. However, males of the nominate subspecies have a black head with a dark green forehead. Their upperparts are dark glossed with emerald green while the lower back and rump are dark blue with some violet. They have a dark iridescent violet throat, a dark gray breast with and emerald green sheen, and a rosy belly, vent area, and undertail coverts. Nominate females have a gray-green head including the forehead, and upperparts that are golden green transitioning to the blue-violet rump; all of these colors are duller than those of the male. The throat and breast are rufous, with green spots on the latter. The belly is rosy and the undertail coverts a paler rose.<p>Males of subspecies C. h. tamai are very similar to those of the nominate but duller. The male's belly and undertail coverts are more bluish than rosy. The females are essentially the same as the nominate.
分类信息
The blue-throated starfrontlet and most other members of genus Coeligena were at one time placed in genus Helianthea but have been in their current placement since the mid-1900s. It has two subspecies, the nominate C. h. helianthea and C. h. tamai.
- 学名
- Coeligena helianthea
- 命名信息
- (Lesson, RP, 1839)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Coeligena
分布与栖息地
The nominate subspecies of blue-throated starfrontlet is found in Colombia's northern and eastern Andes from the Serranía del Perijá, which straddles the border between northern Colombia and northwestern Venezuela, south and west to the Metropolitan Area of Bogotá. C. h. tamai is found in the Tamá Massif in the western Venezuelan state of Táchira. The species inhabits the interior and edges of cloudforest and elfin forest, shrubby slopes, and sometimes bushy landscapes at the lower margin of páramo. It also occurs in flowering gardens. In elevation it ranges between 1,900 and 3,300 m (6,200 and 10,800 ft).
- 迁徙
- Resident species
行为
Details of the blue-throated starfrontlet's movements are unknown, but it likely makes season elevational changes.<p>The blue-throated starfrontlet feeds on nectar by trap-lining, visiting a circuit of a wide variety of flowering plants. It tends to forage within a few meters of the ground. In addition to feeding on nectar it captures small arthropods by gleaning from foliage and sometimes by hawking.<p>The blue-throated starfrontlet's breeding season spans from May to October. Nothing else is known about its breeding phenology.<p>The blue-throated starfrontlet's voice is poorly known. It does make "single, strident 'chit' notes."
保护状况
- 种群趋势
- unknown
照片
分布
其他鸟类
Black-billed Seed-Finch
Sporophila atrirostris
Rare seed-eating bird found in wet, grassy areas (often near water) in lowlands and foothills east of the Andes. Note the very stout, dark bill. Male is black with a small white patch in the wing that may be concealed when perched. Brown female is not easily identified unless seen together with the male. She is smaller than female Chestnut-bellied Seed-Finch, and tends to be slightly darker than female Large-billed Seed-Finch.
Marabou Stork
Leptoptilos crumenifer
This huge, macabre-looking stork has a massive dagger-like bill and naked pink head and neck that appear severely sunburned. A white ruff and loose inflatable skin on the neck add to its odd appearance. It soars effortlessly at great heights searching for food; note its white belly in flight. Marabous are equally content in wetlands or in dry bush; they are most frequently encountered lurking near carrion, as they attend kills of major predators and will opportunistically snatch scraps. They also readily scavenge around humans and waste dumps.
Tepui Tinamou
Crypturellus ptaritepui
Unbarred, dark rufous tinamou with a gray face, throat, and belly. With a good view note the pale eyes and orange base to the bill. Found at medium to high elevations in humid forest on the slopes of a few tepuis in southeastern Venezuela, northern Brazil, and southwestern Guyana. Rarely encountered unless voice is known; song is a long and high-pitched whistle, fading at end. Similar to Little Tinamou (which has a very different voice), but Tepui Tinamou is darker and has pale eyes.
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。