Collared Crow
Corvus torquatus
By far the most distinctive crow of farmland, fields, and other open spaces: adults black with white hindneck connecting to white breast band. Superficially similar to adult Daurian Jackdaw, but the latter is more compact and smaller, with pale plumage extending through the belly. Call is a higher-pitched cawing than that of Carrion and Large-billed Crows.
识别特征
It is about 52–55 cm in length—the same size or slightly larger than the carrion crow (C. corone), with proportionately slightly longer wings, tail and bill. A sleek and handsome bird, it has glossy black plumage except for the back of the neck, upper back (mantle), and a broad band around the lower breast that is white. The bill, legs and feet are black.<p>It sometimes flies with its feet hanging down below the body in a characteristically "lazy" way.<p>The voice is a loud "kaaar" repeated several times with other slight variations on it to suit the occasion. It also like many other corvids, utters strange clipping and clicking sounds during its head bowing display to another bird.
分类信息
Genus: Corvus; Family: Corvidae; Order: Passeriformes.
- 学名
- Corvus torquatus
- 命名信息
- Lesson, RP, 1831
- 目
- Passeriformes
- 科
- Corvidae
- 属
- Corvus
分布与栖息地
The range of this species is essentially China, covering large areas of the country though not further north than Beijing. It occurs in plains and low lying river valleys in fairly open country and cultivated regions and is a common sight in paddy fields. It tends to avoid large towns and cities and is predominantly a rural species.<p>Food is sought mainly on the ground where a large range of items are taken, such as insects, mollusks and other invertebrates (even from shallow water), grains, especially rice and it also searches among refuse for suitable food items left by humans. It appears to take less carrion than other species but will if the opportunity arises, and will also take eggs and nestlings.<p>The nest is usually in a tree and is plastered with mud. There are usually 3–4 eggs laid.<p>It was formerly classified as a Species of Least Concern by the IUCN. But new research has shown it to be rarer than it was believed. It was uplisted to Near Threatened status in 2008 and Vulnerable in 2018.
- 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
Silvery Grebe
Podiceps occipitalis
Widespread, small pale grebe of lakes and reservoirs, often with no surrounding vegetation; nests mainly in colonies, locally by the hundreds. The southern population also occurs in coastal waters in winter. Often looks mostly white at a distance, unlike the darker White-tufted Grebe. The southern population has a silvery-blond hood (reduced in young and nonbreeding birds) and a grayish throat while the northern Andean population has a blond-streaked cap, a white throat, and looks the same year-round. Also note vocal differences between southern and northern populations.
Black-throated Huet-huet
Pteroptochos tarnii
Fairly common but elusive; heard far more often than seen. Favors native temperate forest and adjacent shrubbery, especially bamboo. Feeds on the ground by scratching with its big feet in leaf litter, and runs very quickly and stealthily. Agitated birds can call loudly from middle level perches, cocking their tail. Nests in burrows, but can nest high up in tree hollows. Plumage distinctive, with pale eyering, dark slaty throat and breast, and rusty belly. No range overlap with Chestnut-throated Huet-huet.
House Finch
Haemorhous mexicanus
Frequents suburban settings across North America, along with open woods, brushy field edges, and deserts. Males vary in shades and intensity of red. Some males are yellow or orange. Females are drab gray-brown overall with plain faces and blurry streaks on underparts. Similar to Purple and Cassin's Finch, but House Finch males are more orangey-red with color equally bright on crown, throat, and breast. Red color is mostly restricted to head and upper chest, contrasting with cold gray-brown nape, back, and wings. Pale sides show distinct brown streaks, lacking red tones. Females lack bold face pattern and have more diffuse patterning overall. Often sings loudly in neighborhoods and visits feeders.
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