Lined Forest-Falcon
Micrastur gilvicollis
Fierce-looking raptor of lowland rainforest interior east of the Andes; also ranges up into the foothills in a few areas. Gray with dense barring from throat to breast and an orange face (yellow in younger birds). Similar to Barred Forest-Falcon but usually has a darker orange face and little or no barring on lower underparts. Stays inside forest and is heard far more often than seen. Call is two or three nasal honks, repeated every few seconds.
识别特征
The lined forest falcon is 33 to 38 cm (13 to 15 in) long and weighs 170 to 262 g (6.0 to 9.2 oz). It has pale gray upperparts. Its white underparts have highly variable gray barring, from light gray only on the breast to heavy bars on the entire underparts. Its tail is dark gray with a white tip and two narrow white bars. Its iris is white surrounded by bare reddish orange skin and its legs and feet are yellow.
分类信息
Until 1972 what is now the lined forest falcon was considered a subspecies of the barred forest falcon (M. ruficollis); the treatment as a full species was confirmed in 2019. (In the mid-20th century some previous authors had treated it as a species.) What is now the cryptic forest falcon (M. mintoni) was a population of the lined forest falcon until 2002 when vocal studies and specimen analyses determined it was a separate species. The plumbeous forest falcon (M. plumbeus) has sometimes been considered a subspecies of the lined forest falcon.<p>The lined forest falcon is monotypic.
- 学名
- Micrastur gilvicollis
- 命名信息
- (Vieillot, 1817)
- 目
- Falconiformes
- 科
- Falconidae
- 属
- Micrastur
分布与栖息地
The lined forest falcon is found in the Amazon Basin from eastern Colombia, eastern Ecuador, eastern Peru, and northern Bolivia east through Venezuela, the Guianas, and northern Brazil to the Atlantic coast. It mostly inhabits the interior of intact tropical primary forest, though it occurs in lower density in secondary forest and forest edges. In Colombia and Ecuador it prefers terra firme forest. In elevation it ranges from near sea level to 1,600 m (5,200 ft).
- 迁徙
- Resident species
行为
As far as is known the lined forest falcon is a year-round resident throughout its range.<p>The lined forest falcon hunts mostly in the forest understorey. Its diet has not been described in detail but is known to include lizards, large insects, birds, snakes, and small mammals. It sometimes follows army ant swarms.<p>Essentially nothing is known about the lined forest falcon's breeding biology. It is probably similar to that of the barred forest falcon, which see here.<p>The lined forest falcon's most common vocalization is a series of "nasal "cow-káh", "cow káw-káw" or "cow káw-káw-káw""notes. It typically calls before dawn and during wet weather.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
White-faced Nunbird
Hapaloptila castanea
Rare and elusive denizen of Andean cloud forest; found at higher elevations than any other puffbird. Distinctive; note especially the stout, black bill bordered by white feathers, chestnut underparts, and red eye. Found inside forest, often near exposed earthen banks, which they favor as nesting sites. Remains motionless for extended periods before suddenly sallying out to catch an insect or other small animal. Typical song is a series of evenly spaced, mellow whistles that can be imitated.
Blue-tailed Trogon
Trogon comptus
Colorful trogon of lowland and foothill rainforest in western Ecuador and western Colombia. Both sexes have conspicuous white eyes, unmarked black tail, red belly, and mostly yellow bill. Male is green with a black face. Female is gray with a dark top to her yellow bill. Differs from Slaty-tailed Trogon by yellow (not orange) bill. Also similar to Ecuadorian Trogon, but lacks white on breast. Perches high in the trees for long periods, occasionally sallying out to take fruits or insects. Often first detected by song, a lazy series of 20 or more mellow whistles.
Yellow-streaked Warbler
Phylloscopus armandii
Dull brownish leaf warbler. Brown above with brownish-yellow underparts. Extremely similar in appearance to Radde’s Warbler, but Yellow-streaked has a more contrastingly pale brow stripe, finer bill, and fine yellow streaks on the breast. The breast streaks themselves are often not visible, instead appearing as a faint yellow wash from a distance. Dusky Warbler is somewhat similar but is much browner overall with a darker brow stripe and less contrast between upper- and underparts. Breeds in subalpine shrubbery and descends into foothills to winter in similar habitat. Song is a series of cascading tinkling, buzzy notes. Gives metallic “tinks”.
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