Band-backed Wren

Campylorhynchus zonatus

Large, noisy wren, usually found in groups at middle to high levels in trees. Favors taller forest, from pine-oak woods in mountains down to evergreen forests in foothills; also gardens and orchards. Clambers along branches and pokes into bromeliads, sometimes in mixed-species feeding flocks with orioles and woodcreepers. Plumage is distinctive, with rusty belly, boldly spotted breast, and boldly banded back. Juveniles (seen in summer) are much duller and plainer.

识别特征

This large wren breeds in lowlands and foothills from sea level up to 1700 m altitude in thinned forest or open woodland, scrub, second growth and groves around houses. It mainly occurs on the Caribbean side of the Central American mountain ranges. Its large spherical nest has a wide side entrance and is constructed 2 – 30 m high in a tree or shrub, often hidden amidst bromeliads. The female alone incubates the three to five unmarked or lightly brown-spotted white eggs for about two weeks to hatching, and the young fledge in about the same length of time again. After breeding, families sleep together in dormitory nests like those used for breeding throughout the year.<p>The adult band-backed wren is 16.5 cm long and weighs 29 g. It has a brown-grey crown, black nape, and the rest of the upperparts and tail are heavily barred with black, tawny and white. The breast and throat are white, heavily spotted with black, and the belly is cinnamon. Young birds have duller upperparts and off-white to buff underparts.<p>This species has a short rasping zek call. The song is a mix of dry chatters, splutters and gurgles.<p>The band-backed wren forages actively in family groups of 4-12 birds. It eats mainly insects, spiders and other invertebrates.

分类信息

Genus: Campylorhynchus; Family: Troglodytidae; Order: Passeriformes.

学名
Campylorhynchus zonatus
命名信息
(Lesson, RP, 1832)
Passeriformes
Troglodytidae
Campylorhynchus

分布与栖息地

迁徙
Resident species

行为

Migration pattern: Resident species.

保护状况

Population trend: declining.

种群趋势
declining

照片

分布

鸟叫声

其他鸟类

Lesser Moorhen

Lesser Moorhen

Paragallinula angulata

Small, reclusive moorhen. Often confused with the much more common and extroverted Common Moorhen. Lesser Moorhen is smaller and has a narrower white streak along the side, a mostly yellow bill, and all-yellow legs. Immature is brownish - warmer brown than immature Common Moorhen - with a yellow bill. Found in wetlands, especially grassy, seasonally flooded ones. Shy and retiring. Calls a series of clucks or drier “chak” notes.

Northern Royal Albatross

Northern Royal Albatross

Diomedea sanfordi

Huge albatross of the Southern Ocean; breeds mainly on Chatham Islands in New Zealand, but ranges widely. Especially numerous in Humboldt Current off western South America. Easily separated at a distance from smaller albatrosses by white back. From the Wandering Albatross complex (including Snowy, Tristan, Antipodean, and Amsterdam Albatrosses) by uniformly dark upperwings at all ages with otherwise clean white appearance (including mostly white tail, occasionally with small black markings). This combination of features is never shown by Wandering-types, and Northern Royal never has dirty brownish markings on head and body or a mostly black tail. At close range, note the diagnostic narrow black “lips” on cutting edge of bill, lacking on Wandering-types. Also note slightly longer, thinner bill and shallower forehead, which give Northern Royal a “snoutier” look than Wandering-types. Very similar to Southern Royal Albatross; best separated by uniformly dark upperwings, especially on the leading edge. Youngest Southern Royals can also have dark upperwings with very narrow white leading edge; can require close scrutiny or good photographs to identify with confidence. Range averages further north than Southern Royal, but some overlap.

Ashy-headed Greenlet

Ashy-headed Greenlet

Hylophilus pectoralis

Small vireo-like bird found in variety of lightly wooded habitats from forest edges and scrub to gardens where it can be quite common; often accompanies mixed-species flocks. It has a distinctive gray head and is olive-green above with a yellow breast and an off-white belly. The song is a fast and prolonged trill, “pweeeer-pweeer-pweeer-prrre-e-e-e-e.”

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