Black-faced Grassquit
Melanospiza bicolor
Small sparrowlike bird found in the Caribbean and northern South America. Males are dull olive above with a variable amount of black on the face and breast. Females are plain grayish-olive overall; note the small size, short tail, and pinkish bill and legs. Very similar to female Sooty Grassquit. Found in pairs or small groups in shrubby or grassy areas and forest edge, typically on or near the ground.
识别特征
A male black-faced grassquits is around 10 cm (3.9 in) long and weighs approximately 10 g (0.35 oz). It has a short conical black bill, a black head and breast with an olive green back. Females and immature birds have dull olive-grey upperparts and head, and paler grey underparts becoming whiter on the belly.<p>Males on the South American mainland have more extensively black underparts, shading to a grey belly.[citation needed]<p>The male has a display flight in which he flies for short distances, vibrating his wings and giving a buzzing dik-zeezeezee call.
分类信息
The first formal description of the black-faced grassquit was by the Swedish naturalist Carl Linnaeus in 1766 in the twelfth edition of his Systema Naturae. He introduced the binomial name Fringilla bicolor. Linnaeus based his description on the "Bahama Sparrow" that was described and illustrated by Mark Catesby in his The Natural History of Carolina, Florida and the Bahama Islands which was published between 1729 and 1732. The black-faced grassquit was traditionally placed in the genus Tiaris. A molecular phylogenetic study published in 2014 found that this genus was polyphyletic and that the black-faced grassquit was closely related to the Saint Lucia black finch in the monospecific genus Melanospiza. In the resulting reorganization of the genera, the black-faced grassquit was moved to Melanospiza.<p>Eight subspecies are recognised:
- 学名
- Melanospiza bicolor
- 命名信息
- (Linnaeus, 1766)
- 目
- Passeriformes
- 科
- Passerellidae
- 属
- Melanospiza
分布与栖息地
- 迁徙
- Resident species
行为
This is a common bird in long grass or scrub in open or semi-open areas, including roadsides and ricefields. It makes a domed grass nest, lined with finer grasses, and placed low in a bush or on a bank. The typical clutch is two or three whitish eggs blotched with reddish brown.<p>The black-faced grassquit feeds mainly on seeds, especially of grasses and weeds, occasionally on fruits and berries. It also feeds on small insects, mainly during the breeding season. It is often found in small groups.
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Olive-backed Pipit
Anthus hodgsoni
Small pipit with a greenish-brown back and heavily streaked breast and belly that is often seen in loose flocks or in pairs. Note the distinctive facial pattern: broad pale lines surrounding the eye and a dark ear patch. Prefers more forested areas than other pipits, though will also forage in fields and scrubby edges. Can be tolerant of human activity and is not uncommon in rural areas and city parks in parts of their range. Calls are high-pitched “tseep’s,” often with a buzzy quality. Song is a beautiful series of warbling trills, whistles, and rattles.
Madagascar Swamp Warbler
Acrocephalus newtoni
Medium-sized, long-tailed, gray-brown bird. Note heavy diffuse streaking below and pale eyebrow. Madagascar endemic that is found mainly in marshes, though it will also use mangrove, heath, and moist scrub. Generally skulks in thick undergrowth, though it will sit out in the open to sing. Musical, reeling song: “chup-cho-we-we-we”. Similar to brush-warblers, but has more distinct breast streaking and white eyebrow, and is generally found in marsh rather than dry scrub or forest.
Philippine Green-Pigeon
Treron axillaris
A medium-sized pigeon of lowland and foothill forest canopy, with green underparts, head, and rump, a gray crown, yellow wingbars and edges to the flight feathers, a whitish belly, and white under the base of the tail. Note the whitish bill with a reddish base and the blue eyes. Male has a maroon shoulder and back, where the female is green. Similar to Thick-billed Green-Pigeon, but Philippine has a thinner bill and lacks the green skin around the eye. Female resembles female Pink-necked Green-Pigeon, but that species has yellow marks only on the edge of the wing. Voice is typical of green-pigeons, including a rising-and-falling out-of-tune whistled song.
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