Blue-capped Hummingbird
Eupherusa cyanophrys
Endemic and distinctive, medium-sized hummingbird found in the foothills of the Sierra Madre del Sur in Oaxaca. Favors humid evergreen forests and shade-coffee plantations. Mainly feeds at low to middle levels, darting quickly among flowers and flashing open its mostly white tail. Both sexes have a bright rusty panel in the wings, which appears as a blur when hovering. Male is brilliant green overall with blue cap. Female is pale gray below and has less white in the tail.
识别特征
The Oaxaca hummingbird is 10 to 11 cm (3.9 to 4.3 in) long and weighs 4.1 to 5.4 g (0.14 to 0.19 oz). Both sexes have a straight black bill. Males have a violet-blue forehead, turquoise crown, and emerald green upperparts. Rufous secondaries show as a patch on the folded wing. Their central pair of tail feathers are green and the other four pairs whitish. Their underparts are glittering green with white undertail coverts. Females have green upperparts with a similar wing "patch" as the male's. Their central tail feathers are green and the others white with some dusky green. Their underparts are pale gray.
分类信息
The Oaxaca hummingbird is monotypic. At times some authors have treated it as a subspecies of the white-tailed hummingbird (E. poliocerca) and others have treated both of them as subspecies of the stripe-tailed hummingbird (E. eximia).
- 学名
- Eupherusa cyanophrys
- 命名信息
- Rowley, JS & Orr, 1964
- 目
- Caprimulgiformes
- 科
- Trochilidae
- 属
- Eupherusa
分布与栖息地
The Oaxaca hummingbird is found only on the Pacific slope of the Sierra Madre del Sur (also called Sierra de Miahuatlán) in southern Oaxaca. It inhabits the edges and interior of humid montane, semi-deciduous, and pine-oak forest. In elevation it ranges between 700 and 2,600 m (2,300 and 8,500 ft) and is most common below 1,800 m (5,900 ft).
- 迁徙
- Resident species
行为
The Oaxaca hummingbird's movements are not well known, but it might make seasonal elevational changes.<p>The Oaxaca hummingbird forages for nectar at all levels of the forest from the understory to the canopy. Its diet has not been described in detail but it is known to feed at flowers of Inga, Lobelia, Malvaviscus, and Psittacanthus and some others. It is also assumed to feed on small arthropods like other hummingbirds.<p>Little is known about the Oaxaca hummingbird's breeding phenology. Active nests have been found in May, October, and November. They were cups made of moss lined with plant down with lichen on the outside and placed between 1.2 and 5.4 m (4 and 20 ft) above the ground. The clutch size is two eggs; the incubation length and time to fledging are not known.<p>The Oaxaca hummingbird's song is "a high, rapid, warbling" described as similar to that of the white-tailed hummingbird but "jerkier, less hurried". Its calls are not well known but also appear similar to the white-tailed's "liquid to slightly buzzy, rolled chip".
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Sulawesi Pitta
Erythropitta celebensis
A round-bodied, short-tailed, long-legged terrestrial bird with a red belly. Broad, iridescent blue chest band is bordered with thick black lines. Reddish-brown crown shows an indistinct blue line. Also shows paler brown cheeks and green upperparts. Juvenile is brown with a pale bill base and gray eyes. Singles or pairs forage on forest floor in lowlands and foothills. Unmistakable in limited range on Sulawesi and adjacent islands. Song is a drawn-out, two-part whistle with a longer, trembling first note followed by a falling, mournful note: “waaaaaaaop-wooowow,” as is typical of the genus.
Red-billed Tyrannulet
Zimmerius cinereicapilla
Small and rather scarce flycatcher found in disturbed forest on the east slope of the Andes. Yellowish-olive with a gray head and pale throat. Combination of stubby, reddish bill, pale iris, and yellow edges to wing feathers that do not form distinct wingbars help separate it from other small flycatchers. Overlaps with the very similar Mishana Tyrannulet in northern Peru, but Red-billed has a gray (not olive) crown and a different voice. Calls include soft whistles and squeaks, given alone or in a quick series. Typically seen perched high in a tree in a clearing or at forest edge.
McConnell's Spinetail
Synallaxis macconnelli
Dark, long-tailed, sparrow-sized bird of dense thickets. Body plumage is mostly dark gray with a bright rufous cap and wings. An uncommon and patchily distributed resident of tepui slopes and lowland forest; often found near large rock formations and in old disturbed areas in rainforest. Stays close to the ground, rarely emerging from dense cover. Occurs in pairs or small family groups that forage unobtrusively for insects and do not follow mixed-species flocks. Voice is only audible at close range but is usually the first indication of this bird’s presence: it is a low, gravelly note, given repeatedly and irregularly, often sped into a rolling churr. Pale-breasted Spinetail has a similar plumage pattern, but McConnell’s is much darker and occupies forested habitats that Pale-breasted avoids.
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