Black-whiskered Vireo

Vireo altiloquus

Large vireo, nearly identical in plumage to Red-eyed Vireo but slightly duller and browner. Drab olive-greenish above and white below with gray cap, white eyebrow, and brown eye. Telltale black whisker mark often difficult to see, but is diagnostic. Hooked bill is rather long for a vireo. Primarily a Caribbean species; exact extent of wintering range in South America is poorly known. Limited range in U.S.; breeds in scrubby mangrove forests in Florida. Can be difficult to spot in dense foliage, but listen for song: repeated two- or three-parted chirping phrases that are vaguely reminiscent of a more musical House Sparrow.

识别特征

This vireo is 14–15 cm in length, has a 25 cm wingspan and weighs 17–19 g. It has thick blue-grey legs and a stout bill.<p>The adult black-whiskered vireo has dull olive-green upperparts and white underparts, with yellowish on the flanks and under the tail. It has red eyes and a grey-brown crown with faint dusky edges. There is a dark line through the eyes and a white eyebrow stripe. There is a distinctive black line (the "whisker") on the neck sides. Juvenile birds are similar, but have brown-red eyes.<p>This species is similar to red-eyed vireo, but is duller and browner above, and is best distinguished by the black whisker mark. The song is a three-syllable whip, Tom Kelly, more abrupt than that of red-eyed vireo.<p>The Florida race V. a. barbatulus is shorter-billed by 15% than the northern Caribbean subspecies V. a. bonairensis. The latter form has occurred in the US as a vagrant to Florida and Louisiana.

分类信息

学名
Vireo altiloquus
命名信息
(Vieillot, 1808)
Passeriformes
Vireonidae
Vireo

分布与栖息地

The breeding habitat is open deciduous wooded areas and cultivation, and in Florida also mangroves. The black-whiskered vireo builds a cup nest in a fork of a tree branch, and lays 2-3 white eggs.

繁殖区
NA : se USA and West Indies
非繁殖区
SA
迁徙
Complete migrants

保护状况

种群趋势
unknown

照片

分布

鸟叫声

其他鸟类

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