Cinereous Harrier
Circus cinereus
Fairly common in open country of Patagonia, often near lakes and marshes; uncommon and local northward. Male silvery gray overall with fine rusty barring below. Female and immature are grayish brown above; underparts barred on female, streaked on immature. All plumage have white rump band. Usually seen in flight, hunting low over open country with wings held in a shallow V, tilting side to side like a Turkey Vulture. Perches on ground and fence posts, not in trees or up high.
识别特征
The male's plumage is dark grey above with black wingtips and a white rump. The underparts are pale grey, with a rufous streaked belly. The female's plumage is brown above, with a white rump, and cream coloured underneath, with a streaked belly similar to the males. The female is larger than the male with an average size of 46 cm (18 in) compared to the male's 40 cm (16 in). The wingspan is 90–115 cm (35–45 in). Since the 44.5 cm (17.5 in) tail comprises about 56% of this raptor's total length, this species ties with the long-tailed hawk as the raptor with the longest tail relative to its body size.
分类信息
- 学名
- Circus cinereus
- 命名信息
- Vieillot, 1816
- 目
- Accipitriformes
- 科
- Accipitridae
- 属
- Circus
分布与栖息地
This bird can be found in different open habitats, ranging from lowland marshes to the Andean Altiplano at a maximum altitude of 4000 meters (13123 ft). Like other harriers it nests on the ground. It is usually considered to be sedentary, and may migrate during April and May and returning to breeding grounds between September and October.
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Gillett's Lark
Calendulauda gilletti
A typical-looking medium-sized lark of dry savanna and thornscrub. There is a pale eyebrow between a rufous crown and cheek, and rufous streaking on the breast. The wings show no obvious panel of rufous in flight. Foxy Lark can also be quite rufous, but Gillett’s Lark is separated by its contrasting rufous crown and cheek patch. Its bill is longer and slimmer than Singing Bushlark’s. Its song is a simple phrase of several high-pitched, tinkling notes, usually in a descending pattern.
Crimson Finch
Neochmia phaeton
Elegant, long-tailed finch, adult male brown above, intense crimson below, with a cherry-red face and small pale spots on the side of the chest. Birds in New Guinea and Cape York with white belly, those elsewhere in Australia with black. Female duller, with only red face. Juvenile mostly brownish with dark bill but note long tail. Star Finch has shorter tail, greener plumage. Inhabits tall grass areas, especially with Pandanus (palm-like tree with leaves attached in a corkscrew pattern).
West African Seedeater
Crithagra canicapilla
A medium-sized brown seedeater. Note the boldly marked face with a dark crown, a white eyebrow, and a broad dark-brown patch through the eye. The underparts lack streaking, but may show some brown blotching. Found in woodland, scrub, and cultivated areas. Often in pairs or small flocks. Similar to Reichard's Seedeater, but there is little overlap in range, and West African is easily separated by the unstreaked underparts. Somewhat similar to White-rumped Seedeater, but lacks a white rump, and has a strong facial pattern and unstreaked underparts. Gives a pretty, musical up-and-down song of whistles and trills which also sometimes includes imitations of other birds.
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