Streak-headed Woodcreeper
Lepidocolaptes souleyetii
Medium-size, fairly common woodcreeper of tropical lowlands. Favors forest edge, open woodland, hedges with tall trees. Feeds on trunks and larger branches, often spiraling up one trunk and flying low to the next tree. Note the relatively slender and slightly decurved bill, distinct but fine pale streaking on the head and back. Easily confused with larger Ivory-billed Woodcreeper, which is more of a forest bird and has a bigger and straighter bill.
识别特征
The streak-headed woodcreeper is 19 to 21 cm (7.5 to 8.3 in) long and weighs 23 to 31 g (0.81 to 1.1 oz). It is a slim, medium-sized woodcreeper with a longish, slender, decurved bill. The sexes have the same plumage. Adults of the nominate subspecies L. s. souleyetii have a face with thin whitish buff and dark brown streaks; the sides of the neck are more heavily streaked. They have a whitish buff supercilium and eyering. Their crown and nape are dark brown with bold whitish buff streaks that often extend onto the upper back. Their back and wing coverts are rufous-olive to cinnamon-brown. Their flight feathers, rump, and tail are cinnamon-rufous to rufous-chestnut. Their primaries have brownish edges and dusky tips. Their throat is whitish buff to pale cinnamon. Their underparts are grayish olive to buffy brown with black-edged whitish buff streaks. The streaks are wide on the breast and sides, those on the belly and flanks narrower, and those on the undertail coverts minimal. Their underwing coverts are ochraceous to pale cinnamon-buff. Their iris is pale brown or brown, their bill pale brown or horn with most of the mandible bluish-pink, and their legs and feet grayish olive-green. Juveniles are very similar to adults but with small scattered dusky spots instead of streaks on their underparts.<p>The other subspecies of the streak-headed woodcreeper differ from the nominate and each other thus:
分类信息
The streak-headed woodcreeper has these seven subspecies:<p>The streak-headed woodcreeper's specific epithet commemorates Louis François Auguste Souleyet, French zoologist and naval surgeon.
- 学名
- Lepidocolaptes souleyetii
- 命名信息
- (Lafresnaye, 1849)
- 目
- Passeriformes
- 科
- Furnariidae
- 属
- Lepidocolaptes
分布与栖息地
The subspecies of the streak-headed woodcreeper are found thus:<p>The streak-headed woodcreeper inhabits a variety of wooded landscapes, most of them semi-open to open. These include deciduous and somewhat humid forest, gallery forest, secondary forest, plantations, the edges of humid forest, and open areas with scattered trees. It also locally occurs in mangrove and in arid scrublands. In elevation it reaches 1,500 m (4,900 ft) in Mexico, 1,850 m (6,100 ft) in northern Central America, 1,500 m (4,900 ft) in Costa Rica (though uncommon above 900 m (3,000 ft)), 1,500 m (4,900 ft) in Colombia, and 1,600 m (5,200 ft) in Venezuela. In Ecuador it mostly occurs below 800 m (2,600 ft) but reaches 1,800 m (5,900 ft) locally in Loja Province.
- 迁徙
- Resident species
行为
The streak-headed woodcreeper is a year-round resident throughout its range.<p>The streak-headed woodcreeper's diet is mostly non-flying arthropods, and other invertebrates such as crabs and small fruits are minor components. It forages mostly singly or in pairs, at all levels of the forest, hitching up trunks and branches. It is not known to join mixed-species feeding flocks. It captures prey by flaking bark and probing into crevices and moss clumps.<p>The streak-headed woodcreeper forms pairs during the breeding season but is generally solitary outside it. Its breeding season varies across its range, for example in June and July in Mexico and April to October in Colombia. It usually nests in tree cavities, either natural or excavated by a woodpecker, and pads the bottom with wood chips and bark pieces. It occasionally use nest boxes. Nests in trees are typically 3 to 25 m (10 to 80 ft) above the ground. The clutch size is two eggs. The incubation period is about 15 days; the time to fledging is not known. Both parents incubate the clutch and provision nestlings.<p>The streak-headed woodcreeper's song has been described as "a simple, descending, clear trill, soft and melodious", "a clear musical descending trill that lasts 1.5-3 seconds", "a high-pitched, thin, flat trill, p'e'e'e'e'e'e'e'eeeaaa, rapid and descending throughout, ca 2-2.5 sec." , and as "a loud, ringing, rapid, descending series of puttering notes: pee'i'i'i'i'i'i'i'i'i'i'i'i'i'i'i'i'ew". Its calls include "a harsher, more rattling, shorter trill", "a soft plaintive pyuu", and "a loud, rapidly quavering, descending pee'i'i'u".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Southern Lapwing
Vanellus chilensis
Raucous, conspicuous shorebird. Distinctive color pattern with black breast, white belly, gray head, and bronzy shoulder. Wings boldly patterned in flight. Often in pairs or small flocks in open habitats, usually near water but also in dry pastures. Loud grating call is a good clue to its presence.
Pygmy Sunbird
Hedydipna platura
A tiny-bodied sunbird in which breeding males are colorful and distinctive, and females and non-breeding males quite drab. Breeding males have a green back, a yellow belly, and extremely elongated central tail feathers. Females and non-breeding males have gray-brown upperparts and pale-yellow underparts. Similar to Nile Valley Sunbird, but there is very little overlap in range; males are distinguished by their lack of purple on the back and breast, and females by being darker overall and having a less distinct pale eyebrow. Also similar to female Beautiful Sunbird, but yellower below, with a shorter bill. The most common call is a rising “sweet,” and the song is a typical sunbird jumble.
Yellow-browed Camaroptera
Camaroptera superciliaris
A distinctive camaroptera of tangles in treefall gaps and forest edge. Grayish white below and yellow-green above with a yellowish face and vent. Often holds its tail slightly cocked, and appears relatively long-billed. This species has blue throat pouches on the sides of the neck that are obvious when the bird is calling but can be hidden or appear as dark whiskers most of the time. Often found by its odd, cawing “ohwa ohwa” calls.
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