Aztec Thrush
Ridgwayia pinicola
Rather stocky, boldly patterned thrush of highland pine-oak and fir forest. Endemic to western and central Mexico. Found singly or in flocks, often associating with other thrushes at fruiting trees and bushes. Despite its striking plumage, can be difficult to see as its plumage blends well in sun-dappled foliage. Usually rather quiet, and can sit still for long periods. Male has blackish hood and upperparts with bold white patterning on wings and tail. Female paler and more grayish in areas where male is black.
识别特征
The Aztec thrush is 21.5–24 cm (8.5–9.4 in) long and weighs 67–88 grams (2.4–3.1 oz). The adult male has a dark brown hood, the head, neck and upper mantle being dark brown, with pale flecks or streaks. There may be a pale brown supercilium. The back, scapulars, median coverts and greater coverts are dark brown, the greater coverts having white edges. The primary coverts are black, with grey tips. The flight feathers are black, with some white patches. The lesser and median coverts of the underwing are white, and the greater coverts are blackish grey. The tail is black or blackish brown, with whitish grey tips. The breast is dark brown, and the rest of the underparts is white. The beak is dark brown, and the legs are pale pink. The female does not have a hood, is paler, and has larger streaks. The juvenile bird is blackish, with golden-buff marks on its head and back. It has a cinnamon or reddish-brown lower back, a black tail and scaled underparts.
分类信息
Philip Sclater described the species as Turdus pinicola from southern Mexico in 1859. In 1882, Leonhard Stejneger moved the species into its own genus, Ridgwayia. The genus name honors ornithologist Robert Ridgway. It is also placed in the genus Zoothera. Two subspecies are recognized: R. p. maternalis found in the southwestern United States and northwestern Mexico, and R. p. pinicola in southwestern Mexico.
- 学名
- Ridgwayia pinicola
- 命名信息
- (Sclater, PL, 1859)
- 目
- Passeriformes
- 科
- Turdidae
- 属
- Ridgwayia
分布与栖息地
The species is found in Mexico, in mountains 1,800–3,500 m (5,900–11,500 ft) above sea level. Its habitat is mostly ravines of pine and pine-oak forests. The Aztec thrush is a vagrant in western Texas to southeastern Arizona. The first record in the United States was an immature bird observed in 1977 in Big Bend National Park, Texas.
- 迁徙
- Resident species
行为
This bird usually associates in small groups, sometimes joining mixed-species foraging flocks. It forages in dense vegetation on the ground and eats berries and insects. It has been observed cocking its head while feeding. Its calls include wheeerr, prreep, whein and sweee-uh, and its song is the call repeated and mixed with some other sounds. In the southern part of its range, breeding takes place from May to June. The nest is cup-shaped and made of grass and moss. The eggs are pale blue.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Long-tailed Broadbill
Psarisomus dalhousiae
A gaudy, cartoonish-looking bird of tropical foothill and montane forests. Completely unmistakable; green with a black-and-yellow head and bright blue tail. Moves through the middle and upper layers of the forest in small to medium-sized flocks. Even if seen poorly, square-headed profile and long tail are distinctive. Song is a series of slightly wheezy descending whistles.
Preuss's Swallow
Petrochelidon preussi
A locally abundant swallow often seen around bridges, buildings, and culverts, where it constructs its mud nests. Distinctive cream-colored underparts contrast with its nearly uniform glossy blue upperparts. In flight, it has a noticeable pale rump and a short tail with white “windows” in the tail feathers. Rather unique within its range. Gives raspy calls in flight.
West Indian Woodpecker
Melanerpes superciliaris
A medium-sized woodpecker of drier forests including palm groves. Its strongly barred back eliminates all other species in it range except for Northern and Fernandina’s Flickers, but both flickers lack the West Indian Woodpecker’s extensively red nape and hind-crown. The barring on the back of the Northern Flicker is also far less pronounced than it is on West Indian Woodpecker. Common vocalizations include a staccato “pee-uh-uh-uh-uh…” with accent on first note, and emphatic bursts of “bluhhh, bluhhh, bluhhh,” with notes that are both harsh and slightly trilled.
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