Dusky Flycatcher
Empidonax oberholseri
Dull grayish flycatcher, very similar to other flycatchers, especially Hammond's and Gray. Generally grayish with green-tinged back and pale yellow wash on belly. Wingtips shorter than Hammond's Flycatcher and typically found in brushier, more open habitats such as forest edge, but not as open and sparse as Gray Flycatcher. Listen for classic “bean-dip” call as well as dry "whit" note, similar to Gray but noticeably different from Hammond's. Without an excellent view, silent birds often best left unidentified.
识别特征
Adults have olive-gray upperparts, darker on the wings and tail, with whitish underparts; they have a noticeable medium-width white eye ring, white wing bars and a medium length tail. The breast is washed with olive-gray. The bill is mainly dark. It is a bit smaller than the American grey flycatcher and a bit larger than the Hammond's flycatcher.<p>The male sings a three-part song. A common call is a dry whit, similar to that of other Empidonax flycatchers. A less common call, that is possibly only given by the male, is a sad dew-hic.
分类信息
The scientific name commemorates the American ornithologist Harry Church Oberholser.
- 学名
- Empidonax oberholseri
- 命名信息
- Phillips, AR, 1939
- 目
- Passeriformes
- 科
- Tyrannidae
- 属
- Empidonax
分布与栖息地
These birds migrate to southern Arizona and Mexico. As non-breeding residents in the south of their migration range, they are passage migrants over the deserts of the south-western United States, the Mojave, Sonoran, and Chihuahuan Deserts, where they make their stops along the flyway. Their breeding habitat is mountain slopes and foothills with brush and scattered trees (especially ponderosa pine) across western North America. They make a cup nest low in a vertical fork in a shrub.
- 繁殖区
- NA : w Canada and w USA
- 非繁殖区
- sw USA and Mexico
- 迁徙
- Complete migrants
行为
They often wait on an open perch and fly out to catch insects in flight (hawking), and will also pluck insects from foliage while hovering (gleaning).
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Yellowhammer
Emberiza citrinella
Male distinctive, with bright yellow head, yellowish underparts. Female is drab and streaky, usually with yellowish wash to face, and often found with bright males. Note bright rusty rump. White outer tail feathers flash in flight. A species of heathland, forest clearings, and farmland with hedges. Male sings from a prominent perch, giving a dry and uninspired “dzidzidzidzidzi.” Forms flocks in winter, feeding mainly on ground in search of seeds. A native of Eurasia, introduced to New Zealand and a few adjacent islands.
Rufous-shafted Woodstar
Chaetocercus jourdanii
Tiny, mostly green bumblebee-like hummingbird with a straight bill, glittering magenta throat, white chest band and sides of rump, and short forked tail. Female very different, with buffy underparts, dark brown ears, and unforked rufous tail with a black band. Found in cloud forest, edges, second growth, and gardens, with some seasonal movements. Often hard to see, but sometimes perches at the top of bare branches. In Andes, compare to the similar Gorgeted Woodstar; male Gorgeted has longer purple feathers on the throat, and female lacks green central tail feathers. At lower elevations compare with Amethyst Woodstar, in which the male has a longer tail and female has a whitish throat and black tail tipped with white. Restricted to Colombia and Venezuela.
Black-faced Monarch
Monarcha melanopsis
A slim songbird with rather long tail and substantial bill. Gray above, rufous below, with gray head, black forehead and throat. Juvenile lacks black in face. In all plumages, small white crescent in front of eye. Often perches horizontally, slightly raising tail. Inhabits wetter forested areas along eastern coast of Australia, where it forages slowly for insects in foliage.
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