Plush-crested Jay
Cyanocorax chrysops
Large and striking dark blue jay found in various forest and woodlands types where it is often encountered in noisy groups of up to a dozen or so. Note the odd, rounded black crest, black head and breast that contrasts with yellow eyes and a bright blue eyebrow and nape. The lower belly and the lower half of the tail are white while the upperparts are dark blue.
识别特征
The plush-crested jay is a medium-sized bird with an overall dark blue colored plumage. It has a cream-yellow underbelly, undertail coverts, underwings, and tail tip, while the upper breast, neck, and head are mostly black. It has a lighter blue on its cheeks and nape, which fades into the darker blue of its body, as well as a spot above its eyes, which are yellow. Its bill is dark blue to black. It has a rounded crest on its head, which it is named for.
分类信息
- 学名
- Cyanocorax chrysops
- 命名信息
- (Vieillot, 1818)
- 目
- Passeriformes
- 科
- Corvidae
- 属
- Cyanocorax
分布与栖息地
The range of the plush-crested jay extends from the Southern Region, Brazil with Uruguay and approaches the South Atlantic coast, but avoids the coast, approximating a 400 to 150 km coastal strip; the coastal-inland range extends 3500 km from São Paulo south to Rio Grande do Sul bordering Uruguay. The inland range continues in northwestern Uruguay and extends northwest through northern Argentina, Paraguay–Bolivia, and through the Pantanal at the southern Cerrado; the range extends in two arms, to the northwest to northern Bolivia, and northeastwards to headwaters of the Amazon Basin Tapajós River.<p>In the Amazon Basin, central Bolivia is the northwest range limit, the headwater tributaries to the north-northeast flowing Madeira River; the next range skips the Guaporé River, (a northwest-flowing tributary to the Madeira), eastwards on the Brazil–Bolivia border, and is next found at the headwaters of the Tapajós River, and joins on the east the extreme headwaters of the Xingu River.<p>A disjunct range occurs downstream on the Tapajós and east towards the Xingu River, a block 850 by 750 kilometres (530 mi × 470 mi). Two other localized populations occur in the Amazon Basin, one on the Amazon River, the other on the downstream Madeira River.
- 迁徙
- Resident species
行为
The plush-crested jay is a non-migratory bird that is known to form flocks of 3-10 on average, sometimes including other species. This flock will typically have a few breeding pairs, and the social hierarchy is headed by the breeding female(s). They will typically create nests in trees, consisting of twigs, sticks, roots, and other fibers, where the female will spend most of her time while brooding. Caring for nests and young is often communal.<p>While foraging for food, they will stay on the ground or occasionally forage in trees for food. They have also been observed following ants back to their nests, either to eat them or other insects nearby.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Warbling Vireo
Vireo gilvus
Rather nondescript vireo with a blank face. Pale grayish-olive overall with a faint white eyebrow, darker grayish crown, and pale yellowish wash on the sides. Often confused with Philadelphia Vireo; note Warbling shows brightest color on sides (not throat) and fainter dark eyeline (especially indistinct in front of the eye). Warbling is also longer-tailed and has a slightly longer, thinner bill than Philadelphia. Scratchy warbling song is heard from treetops, particularly in riparian areas and cottonwoods. Migrants and wintering birds can be found in any wooded habitat, as far south as Central America.
Gabon Woodpecker
Dendropicos gabonensis
A medium-sized woodpecker of forest edge, often seen probing and prying into wood for insects. Shows a solid green back and upper tail, a red crown, dark cheeks, and heavily spotted or streaked underparts. This combination of plumage characteristics is unique within its range, where other green-backed woodpeckers co-occur. Call is a buzzing “z-zeep” or a repeated harsh “zaa zaa.”
Norfolk Robin
Petroica multicolor
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