词条 | Streaked xenops |
释义 |
| name = Streaked xenops | image = Xenops rutilans -Piraju, Sao Paulo, Brazil-8.jpg | image_caption =In Piraju, São Paulo, Brazil | status = LC | status_system = IUCN3.1 | status_ref = [1] | genus = Xenops | species = rutilans | authority = Temminck, 1821 }} The streaked xenops (Xenops rutilans) is a passerine bird which breeds in the tropical New World from Costa Rica and Trinidad south to Bolivia and northern Argentina. Like the closely related true woodcreepers, it is a member of the South American bird family Furnariidae. The streaked xenops is typically 4.8 in (12.2 cm) long, weighs 0.44 oz (12.6 g), and has a stubby wedge-shaped bill. The head is dark brown with a whitish supercilium and malar stripe. The upperparts are brown, becoming rufous on the tail and rump, and there is a buff bar on the darker brown wings. The underparts are white-streaked olive brown. Males and females looks alike. Visually inconspicuous, it is easier located by its chattering call, a series of 5 or 6 metallic zeet notes. It is found in wet forests in foothills and mountains between 2,000-7,200 ft (600-2,200 m) ASL, and will utilize secondary forests and opened-up growth.[2] The streaked xenops is often difficult to see as it forages on bark, rotting stumps or bare twigs;[2] it moves in all directions on the trunk like a treecreeper, but does not use its tail as a prop. It feeds on arthropods such as the larvae of wood-boring beetles, but can also catch flying termites in mid-air.[3] It joins mixed-species feeding flocks on a more or less regular basis depending on location, usually moving through the middle levels of the forest.[4] The streaked xenops builds its nest by simply placing a few stems and roots in a hole 5–15 ft (1.5-4.5 m) high in a tree. The normal clutch is two white eggs, incubated by both sexes. Footnotes1. ^{{IUCN|id=22702998 |title=Xenops rutilans |assessor=BirdLife International |assessor-link=BirdLife International |version=2013.2 |year=2012 |accessdate=26 November 2013}} 2. ^1 de L. Fávaro et al. (2006) 3. ^Olson & Alvarenga (2006) 4. ^Machado (1999), Olson & Alvarenga (2006) References
External links
7 : Xenops|Birds of Costa Rica|Birds of the Northern Andes|Birds of Brazil|Birds of Bolivia|Birds of Ecuador|Birds described in 1821 |
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