Black-tailed Trainbearer
Lesbia victoriae
Small hummingbird with an exceptionally long tail. Green overall with a fairly short, slightly decurved bill. The male’s long tail is striking. Sexes similar but females are more spotted below and have a shorter tail. Could be confused with Long-tailed Sylph, but the trainbearer occurs in dry, scrubby, open habitats, not in forests. Compare with very similar Green-tailed Trainbearer; Black-tailed has a longer, more decurved bill, a longer tail that usually looks slightly curved, and is somewhat duller green. Occurs from Colombia to Peru, from around 2,500 to 3,800 m. Occasionally visits feeders, but more often seen feeding at flowering shrubs.
识别特征
Males measure between 21 and 24 centimeters long, including the long tail. They are mostly green, with long black tail feathers and an iridescent green patch on the chest and throat. Females are between 13.5 and 14.5 centimeters in length. They differ from the male in having a shorter tail and white underparts with green spots. The black-tailed trainbearer has a longer, more decurved bill and (in males) a longer, more curved tail than the green-tailed trainbearer, and also tends to be duller green overall.<p>With a wing length of 59.9mm, Lesbia victoriae victoriae is the largest subspecies in the genus Lesbia.
分类信息
- 学名
- Lesbia victoriae
- 命名信息
- (Bourcier & Mulsant, 1846)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Lesbia
分布与栖息地
The black-tailed trainbearer is widely distributed in central and northern Andes from Colombia through Ecuador to Peru, at altitudes between 2500 and 3800 meters.<p>Three subspecies are currently recognised. Lesbia victoriae victoriae is the northernmost subspecies, occurring from the central Andes of Colombia to southern Ecuador. L. v. juliae is found in the center of the species's distribution, from southern Ecuador to northern Peru. L. v. berlepschi is the southernmost subspecies, occurring from Huánuco to Cuzco in Peru. In the past, Ecuadorian populations of L. v. victoriae were sometimes treated as a fourth subspecies, L. v. aequatorialis, but they aren't different enough from Colombian birds to warrant treatment as a separate subspecies.<p>Lesbia victoriae prefers semi-open areas instead of closed forest, meaning that it can adapt well to urban ecosystems like parks and gardens.
- 迁徙
- Resident species
行为
The black-tailed trainbearer is not aggressive and is commonly displaced by more aggressive species as the sparkling violetear (Colibri coruscans).<p>The black-tailed trainbearer is a nectar generalist, foraging on flowers of various different sizes and species, mostly near the ground. They complement their diet by consuming small arthropods, in a greater percentage than species occurring at lower altitudes.<p>Male courtship behavior consists of flying high and displaying the tail, then diving and making a clicking noise with the tail. Once courtship ends, the couple mates and builds a nest in a bush. They tend to use synthetic fibers from human activity when available.<p>Males and females both take care of the nest, but tend to shy away when there is danger nearby.
保护状况
Because of its broad distribution and the size and stability of its populations, the black-tailed trainbearer has been evaluated as least concern by the IUCN. Its preference for open habitats makes this hummingbird relatively resilient to changes in urban and rural areas.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
White-bellied Wren
Uropsila leucogastra
Small stub-tailed wren of tropical woodland, commonest in drier areas, uncommon and local in humid areas. Often more visible than other small forest wrens, clambering at mid-levels in open understory. Note the ‘blank’ whitish face and broad whitish eyebrow, along with a fairly short tail that is often held cocked. Song is short pleasant warble, tiddle-ee or tiddle-ee-oo, simpler than songs of most wrens.
Smoky Robin
Melanodryas cryptoleuca
A fairly small bird of montane forest. Slaty-gray plumage, paler below with blackish wings and tail. Perches low down, often on diagonal branches or vertical mossy trunks, flicking its tail and scanning the ground for insects. Very similar to Blue-gray Robin, but Smoky lacks the bluish tinge to the gray, has a paler belly and less contrasting black wing feathers. Voice, an up-and-down “whit-tyap!” repeated in series.
Peruvian Sheartail
Thaumastura cora
Tiny hummingbird of desert lowlands and foothills; found in gardens, agricultural areas with flowers, and native scrub. Adult male with long black-and-white tail “streamers” is basically unmistakable, but greatly outnumbered by females and immatures, which look much like several other small hummingbirds. On females and immatures note the relatively long tail with pale edging to the shorter central feathers and lack of rusty tones to the plumage overall.
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。