Golden-crowned Warbler
Basileuterus culicivorus
Small, rather active warbler of tropical evergreen and semi-deciduous forest in foothills and lowlands. Often in pairs at low to middle levels in shady forests with fairly open understory. Regularly seen with mixed-species feeding flocks. Like other tropical warblers, sexes look alike: overall grayish above and yellowish below with weak blackish head stripes that border a dull and easily overlooked golden or dull orangish central crown stripe.
识别特征
The golden-crowned warbler is 12.7 cm (5.0 in) long and weighs 10 g (0.35 oz). It has grey-green upperparts and bright yellow underparts. The head is grey with a black-bordered yellow crown stripe, a yellow or white supercilium and a black eyestripe. Sexes are similar, but the immature golden-crowned warbler is duller, browner and lacks the head pattern other than the eyestripe.
分类信息
Golden-crowned warbler has 13 geographical races, which fall into three groups. The Central American culicivorus group (known as the stripe-crowned warbler) is essentially as described above, the southwestern cabanisi group (known as Cabanis's warbler) has grey upperparts and a white supercilium, and the aureocapillus group (known as the golden-crowned warbler) of the southeast, which has a white supercilium and orange-rufous crown stripe. The three groups are sometimes considered to be different species.
- 学名
- Basileuterus culicivorus
- 命名信息
- (Deppe, 1830)
- 目
- Passeriformes
- 科
- Parulidae
- 属
- Basileuterus
分布与栖息地
It breeds from Mexico and south through Central America to northeastern Argentina and Uruguay, and on Trinidad. It is mainly a species of lowland forests.
- 迁徙
- Resident species
行为
These birds feed on insects and spiders. The song is a high thin pit-seet-seet-seet-seet, and the call is a sharp tsip. It lays two to four rufous-spotted white eggs in a domed nest in a bank, often by a forest path, or under leaves on the forest floor. Parent birds will feign injury to distract potential nest predators.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Dusky Chlorospingus
Chlorospingus semifuscus
This drab tanager-like sparrow is common and noisy in its limited range, often parading around in rambunctious flocks. Sexes are similar: olive above and gray below with a stout bill and reddish or pale eyes. Lack of yellow anywhere on the underparts helps separate it from other chlorospingus. Occurs in cloud forest and edges from around 700–2200 m. Small groups typically move through the understory and middle levels, occasionally straying into the canopy. Frequently follows mixed-species flocks. Listen for its piercing squeaks and chips, sometimes accelerating into a messy chatter.
Nicobar Jungle Flycatcher
Cyornis nicobaricus
A plump flycatcher with brown upperparts, whitish underparts, and warm brown flanks. Note the pale feet and the large, bicolored bill with a hooked tip. Restricted to the forests of the Nicobar Islands, where it makes sallies for insects from low perches. Song said to be a rapid series of loud, melodic whistles ending with a soft, short “trrr.”
Creamy-rumped Miner
Geositta isabellina
Local in the high Andes of central Chile and adjacent Argentina. Favors open slopes with sandy and gravelly soil, scattered bunch grass and low shrubs, adjacent bogs, and rocky areas. Often in pairs, walking with waddling gait and pumping its tail like most miners. Plumage rather drab and plain sandy overall with diffuse dusky breast streaking and a relatively long and slightly decurved bill. In flight shows a contrasting creamy-white rump. Compare with the similar Rufous-banded and Common Miners.
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