Stripe-chested Antwren
Myrmotherula longicauda
Small, streaky antbird of humid forest along the east slope of the Andes; also found in lowlands away from the mountains in a few areas. Male is boldly striped with black and white. Female is black and tan with a similar stripy pattern but has plainer underparts. Inhabits dense vegetation at forest edge or overgrown clearings. Song is an excited series of doubled notes: “hiccup, hiccup, hiccup…”
识别特征
The stripe-chested antwren is 9 to 11 cm (3.5 to 4.3 in) long and weighs 8 to 9.5 g (0.28 to 0.34 oz). It is a smallish bird with a somewhat longer tail than other members of its genus. Adult males have a black and white streaked face and neck. Their crown, back, and rump are black with white or pale gray streaks. Their tail is black with white edges and tips to the feathers. Their wings are black with wide white edges on the coverts and narrower white edges on the flight feathers. Their throat, breast, and belly are white with light black streaks on the breast and flanks. Adult females have buff streaks (not white) on the face, head, and upperparts. Their wing coverts have white or buff edges. Their underparts are buff that is much paler on the throat and belly than the breast. The sides of the breast have a small amount of pale gray streaking. The species' iris is dark brown, its maxilla black, dark gray, or bluish gray, its mandible gray to bluish gray, and its legs and feet gray to bluish gray. The plumage differences among the subspecies are subtle and "not entirely clear".
分类信息
The stripe-chested antwren has these four subspecies:<p>Gyldenstolpe treated subspecies M. l. australis as a separate species but that treatment was not otherwise accepted.
- 学名
- Myrmotherula longicauda
- 命名信息
- Berlepsch & Stolzmann, 1894
- 目
- Passeriformes
- 科
- Thamnophilidae
- 属
- Myrmotherula
分布与栖息地
The stripe-chested antwren is found in a disjunct distribution along the eastern slope of the Andes. The subspecies are distributed thus:<p>In most of its range the stripe-chested antwren inhabits the edges of humid evergreen forest and also secondary forest and bamboo stands. In elevation it ranges between 400 and 1,550 m (1,300 and 5,100 ft) though only as high as 1,100 m (3,600 ft) in Colombia and mostly below 1,000 m (3,300 ft) in Ecuador. The disjunct population in Loreto, Peru, inhabits permanently flooded forest around blackwater lakes at an elevation of about 150 m (500 ft).
- 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
Pyrrhuloxia
Cardinalis sinuatus
Essentially a desert-dwelling cardinal, found in brushy areas of the southwestern U.S. and northern Mexico. Shaped much like a Northern Cardinal but with a longer, thinner crest and more rounded bill shape. Plumage is mostly gray with red highlights on the face, crest, belly, wings, and tail. Bill color is usually yellowish, but grayer on immatures. Usually seen in pairs or small flocks, often visiting bird feeders. Song is similar to Northern Cardinal but higher-pitched and more piercing.
Stark's Lark
Spizocorys starki
A pallid, medium-small, compact lark with a pale stout bill that appears swollen and a streaky crest that is often raised. The upperparts are sandy brown with indistinct dark streaks, the face is plain with a distinct eyebrow, and the breast shows very diffuse streaking on whitish underparts. Highly nomadic; small to very large flocks can appear after rains, sometimes associating with sparrow-larks or buntings, preferring arid grasslands on plains and gravel rather than sandy substrates. The species performs an aerial display with trills, whistles, and chirps. Often it rests in shade during the heat of the day with the crest raised, mouth open, eyes half shut, and wings drooped to aid in cooling.
White-winged Crossbill
Loxia leucoptera
Stocky, large-headed finch with a unique crossed bill. Males are pinkish-red with black wings and two bold white wingbars. Females yellowish overall. Nomadic; breeds at any time of year, whenever there is enough food available. Prefers spruce cones. Red Crossbill also has a crossed bill, but is duller overall without white wingbars. Often in small flocks. Rarely visits feeders. Listen for distinctive “machine-gun rattle” calls and high-pitched tooting, like a toy truck.
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