Spot-throated Hummingbird
Thaumasius taczanowskii
A large, drab hummingbird restricted to the Marañon drainage of northern Peru and extreme southern Ecuador. It has dull green upperparts, light gray underparts, green flecks on the throat, and a white spot behind the eye. Similar to Tumbes Hummingbird, but throat spots are much more conspicuous and range does not extend to the Pacific side of the Andes. Inhabits dry and semi-humid forest and scrub.
识别特征
The spot-throated hummingbird is 11.5 to 12.5 cm (4.5 to 4.9 in) long and weighs about 6 to 7 g (0.21 to 0.25 oz). The sexes are essentially alike. They have a somewhat decurved black bill, though sometimes the mandible is gray-brown or even yellow with a black tip. Their upperparts are grayish green to bronze green with a bronze crown and uppertail coverts. Their inner tail feathers are grayish green to bronze green that progresses to grayish on the outer ones, which also have a bronze band near the end. Their underparts are drab gray with golden green speckles on the chin, throat, and flanks. The undertail coverts have pale brown centers and whitish edges.
分类信息
The spot-throated hummingbird was formerly placed in the genus Leucippus. A molecular phylogenetic study published in 2014 found that Leucippus was polyphyletic. To resolve the polyphyly the spot-throated hummingbird and the Tumbes hummingbird (Thaumasius baeri) were moved by most taxonomic systems to the resurrected genus Thaumasius. However, BirdLife International's Handbook of the Birds of the World retains it in Leucippus.<p>The spot-throated hummingbird is monotypic.
- 学名
- Thaumasius taczanowskii
- 命名信息
- Sclater, PL, 1879
- 目
- Invalid Species Name
- 科
- Trochilidae
- 属
- Thaumasius
分布与栖息地
The spot-throated hummingbird is generally considered to occur only in Peru, on the west slope of the Andes and the Marañon River valley from near the Ecuadorean border south to Ancash Department. Undocumented sight records in far southern Ecuador lead the South American Classification Committee of the American Ornithological Society to list it as hypothetical in that country. It inhabits arid scrublands and the edges of deciduous forest. In elevation in the Andes it mostly occurs between 900 and 1,900 m (3,000 and 6,200 ft) but is found locally as low as 200 m (660 ft). In the Marañon valley it occurs between 350 and 2,800 m (1,100 and 9,200 ft).
- 迁徙
- Resident species
行为
The movements of the spot-throated hummingbird, if any, have not been documented.<p>The spot-throated hummingbird forages for nectar from the understory to the mid-strata. Though details of the flowering plants it favors are lacking, it is known to feed at Inga trees, Agave, and banana (Musa). In addition to nectar, it feeds on small arthropods caught on the wing.<p>The spot-throated hummingbird's breeding phenology and nest have not been described.<p>The spot-throated hummingbird's song is "a complex series of chips and wheezing electric warbles." It also makes "a dry chatter and tip notes."
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Gray-hooded Gull
Chroicocephalus cirrocephalus
Distinctive gull. Breeding adults have a gray hood, pale eyes, and a red bill and legs. The back is medium gray and the wings have extensively dark flight feathers. Loses the gray hood in the nonbreeding season which is replaced by a dark cheek spot, while juveniles have paler bills and variably brown mottled wings and back.
Eastern Yellow Wagtail
Motacilla tschutschensis
Attractive ground-dwelling bird. Slender and long-tailed, bright yellow below with paler throat and grayish-olive back; extremely variable. Tail is black with white outer feathers; often pumps tail up and down while walking on the ground. Young birds lack yellow color, but have distinctive head pattern. Often seen near water. Listen for high-pitched, piercing call note. Common breeder on Arctic tundra from Alaska to Russia; found in grassy and waterside habitats in Southeast Asian wintering grounds and in migration.
Christmas Shearwater
Puffinus nativitatis
A medium-sized shearwater with uniformly dark brown plumage and no contrasting markings. Flies more steadily than most shearwaters and usually flies low over the water. Large numbers nest on most of the Northwestern Hawaiian Islands. A few pairs nest on Moku Manu Islet off the eastern coast of Oahu. Often seen from boats in the Northwestern Hawaiian Islands, but rarely on the main islands and rarely from shore. The voice, usually heard only at breeding colonies, is a low moan.
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。