Townsend's Warbler
Setophaga townsendi
Brightly-colored warbler with a contrasting face pattern with dark cheeks and crown surrounded by bright yellow. Also shows olive back, bold white wingbars, and yellow on the breast. Intensity of color varies with age and sex; adult males are brightest, with black throat, while immatures are more washed out with a pale yellowish throat. Breeds in mature coniferous forests in northwestern North America. Winters from the Pacific coast of the U.S. to Costa Rica, with large numbers especially in the highlands of Mexico and Guatemala. Usually stays in the canopy. Sometimes gathers in large mixed flocks with other warblers and small songbirds, especially on the wintering grounds. Compare with plainer-faced Hermit Warbler, and beware that hybrids occur. Also similar to Black-throated Green Warbler, which overlaps in range most often on the wintering grounds; note Townsend’s darker cheeks and more extensive yellow on breast.
识别特征
Townsend's warbler has a yellow face with a black stripe across its cheeks extending into an ear patch, a thin pointed bill, two white wing bars, olive upperparts with black streaks on their backs and flanks, and a white belly. Adult males have a black cap, black throat and yellow lower breast; females have a dark cap and a yellow throat. Immature birds are similar to females with a dark green cap and cheeks.
分类信息
Townsend's warbler was formally described in 1837 by the American naturalist John Kirk Townsend under the binomial name Sylvia townsendi. The type locality is Fort Vancouver on the Columbia River in the state of Washington. After the merger of the genera Dendroica and Setophaga, Townsend's warbler is now placed in the genus Setophaga that was introduced by the English naturalist William Swainson in 1827. The species is monotypic: no subspecies are recognised.
- 学名
- Setophaga townsendi
- 命名信息
- (Townsend, JK, 1837)
- 目
- Passeriformes
- 科
- Parulidae
- 属
- Setophaga
分布与栖息地
- 繁殖区
- NA : se Alaska, w Canada and nw USA
- 非繁殖区
- MA
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Ryukyu Robin
Larvivora komadori
Rather tame songbird of shady subtropical broadleaf forests. Breeds in the northern Ryukyu Islands, with some migrating to the southern Ryukyu Islands. Bright rufous-orange above, whitish below, with a black throat, breast, and flanks in the male. Pumps the tail and flutters wings regularly, much like other robins. Most readily seen on hiking trails beside streams during the earlier hours of the day. Gives high-pitched calls and beautiful whistled songs.
Collared Treepie
Dendrocitta frontalis
Like many other treepies, this is a noisy, social bird, often seen in flocks moving through the canopy and through openings in the forest. Extensively black face, silver hood, and lack of a wing patch distinguish this species from other treepies in its range. Inhabits forests from the lowlands up to montane areas. Loud, with a varied repertoire of whistles, clinks, and squawks.
Slaty-legged Crake
Rallina eurizonoides
Small, chickenlike dweller of dense forests and tangled edges. Dark brown above, with orange head and breast and black-and-white-striped sides. Juvenile similar but with brown head and breast, narrower white stripes below. Dark lead-gray legs distinguish this species from Red-legged, Band-bellied, and Ruddy-breasted crakes, which also show different underpart patterns. Sings at night from favored tree perches, a series of doubled hoots that recall Mountain Scops-Owl.
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