Streak-crowned Antvireo

Dysithamnus striaticeps

This plump little forest bird has a large head and short tail. Not striking, but distinctive in limited range. Male grayer, female browner. Look for small white spots on wing and faint streaks on throat and chest. Both sexes have streaked crown, although male is gray and female is rufous. Often seen following a mixed-species flock; sticks to the lower levels in the forest.

识别特征

The streak-crowned antvireo is 10 to 11 cm (3.9 to 4.3 in) long and weighs 15 to 17 g (0.53 to 0.60 oz). Adult males have a dark gray forehead, crown, and nape with heavy grayish white streaking. Their ear coverts are blackish. Their upperparts are grayish olive with a hidden white patch between the scapulars. Their flight feathers are dark grayish olive with wide buffy grayish edges; their wing coverts are blackish with white tips. Their tail is dark grayish olive with narrow white tips on the feathers. Their throat and breast are white with prominent dark streaks, their sides olive-gray, their belly whitish, and their undertail coverts whitish with a yellowish tinge. Adult females have a rufous crown and nape with dark spots. Their wing coverts are less black than the male's and their breast and flanks are ochraceous. Subadult males resemble adult females but with grayer upperparts and whiter underparts.

分类信息

The streak-crowned antvireo is monotypic. It and the spot-crowned antvireo (D. puncticeps) are closely related and may form a superspecies.

学名
Dysithamnus striaticeps
命名信息
Lawrence, 1865
Passeriformes
Thamnophilidae
Dysithamnus

分布与栖息地

The streak-crowned antvireo is found from extreme southeastern Honduras along the Caribbean slope through Nicaragua and most of Costa Rica, and also across northern Costa Rica into Guanacaste Province. It primarily inhabits the understorey to mid-storey of evergreen forest in the lowlands and foothills, and much less frequently is found in mature secondary forest. In elevation it ranges from sea level to 400 m (1,300 ft) in Honduras and to 800 m (2,600 ft) in Nicaragua and Costa Rica.

迁徙
Resident species

行为

Migration pattern: Resident species.

保护状况

Population trend: declining.

种群趋势
declining

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分布

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