Creamy-bellied Antwren
Herpsilochmus motacilloides
Small antwren found in the canopy of foothill forests of the eastern Andes in central Peru. Note the black cap, striped face, white wingbars, and lack of rufous in the wing. The slight yellowish tinge on the underparts for which the species is named is often hard to see in the field. Female has white spotting in the crown. While several other antwrens in Peru share similar plumage features, none of them occur in the range of this species. Song starts with a couple of peeping notes followed by a fast descending trill.
识别特征
The creamy-bellied antwren is about 12 cm (4.7 in) long and weighs about 10.5 to 13 g (0.37 to 0.46 oz). Adult males have a black crown and nape, a white supercilium, a thin black streak through the eye, and white ear coverts. Their back and rump are gray or olive gray with white-tipped blackish scapulars and a small hidden white patch between them. Their wings are black with white tips on the coverts and white edges on the flight feathers. Their central tail feathers are black with small white tips; the rest are black with white tips that are progressively larger to the entirely white outermost pair. Their throat is white or pale yellow buff and their breast and belly pale yellow with a light gray wash on the sides of the breast and flanks. Adult females have a rusty brown forehead and a black streak behind the eye. Their crown and nape are black with white streaks. Their back and rump are olive gray with white-edged blackish scapulars. Their wings are black with white tips on the coverts and pale olive brown or whitish brown edges. Their tail is like the male's. Their throat is white and the rest of their underparts are like the male's. Adults have a brown iris, a black maxilla, a grayish blue mandible, and blue-gray or grayish blue legs and feet.
分类信息
For much of the twentieth century the creamy-bellied antwren was treated as a subspecies of the Bahia antwren (Herpsilochmus pileatus), though at least one study suggested that it was a species. In the early twenty-first century, phylogenetic and other analyses confirmed that it is a species. The creamy-bellied antwren and the ash-throated antwren (H. parkeri) are sister species.<p>The creamy-bellied antwren is monotypic.
- 学名
- Herpsilochmus motacilloides
- 命名信息
- Taczanowski, 1874
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Herpsilochmus
分布与栖息地
The creamy-bellied antwren is found on the east side of the Peruvian Andes between the departments of Huánuco and Cuzco. It inhabits it interior and edges of humid montane forest where it favors areas with tall trees and much moss and epiphytes. In elevation it ranges between 900 and 2,100 m (3,000 and 6,900 ft).
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Temminck's Courser
Cursorius temminckii
Elegant, long-legged, upland shorebird. Note the rufous crown and black patch on the belly. Shows a completely black wing in flight. Found in very open areas such as short grassland, semi-desert, and overgrazed and recently burned areas. Usually seen in pairs or family groups. Like all coursers, ducks the head and runs across the ground at great speed. Call is a mournful, off-key, up-and-down series. All-rufous crown, black belly patch, and all-black wing are not shown by the area’s other coursers.
Red-throated Loon
Gavia stellata
The smallest loon, with a slender neck and bill. Often holds the thin bill at an upward angle. In breeding plumage, note smooth gray head, brick-red throat, and dark back. In winter, dark cap and hind neck contrast with white face and throat. In flight, often lowers and raises head more than other loons; also note small feet. Juveniles can look quite dark with a smudgy gray neck and limited white throat. Often confused with other loons, especially Pacific and Arctic; note overall head and bill shape and less sharp contrast to the head pattern. Breeds on ponds in the Arctic tundra. Winters primarily on saltwater, but can use large lakes and reservoirs in migration. Sometimes gathers in loose flocks where food is plentiful.
Violet-headed Hummingbird
Klais guimeti
Tiny compact hummingbird. Note short straight bill and bold white spot behind eye. Male has bright violet crown and throat; female has paler bluish crown and gray throat. Often flies with its tail slightly cocked. Most often seen feeding on small purple flowers in gardens, but also found in forested areas and edges.
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