Tooth-billed Hummingbird
Androdon aequatorialis
A distinctive, fairly large hummingbird with a super long bill. Note the streaky throat and breast, and dull green upperparts with a coppery crown. The tail has a pale gray base, a broad black band, and white tips. Sexes similar, although female lacks toothlike serrations on bill (nearly impossible to see in the field). Found in lowlands and foothills from extreme eastern Panama to northwest Ecuador. Typically occurs within mature humid forest where it feeds in the lower to middle levels.
识别特征
The tooth-billed hummingbird has a total length of c. .mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}14 cm (5+1⁄2 in), which includes the long, essentially straight bill of c. 4 cm (1+1⁄2 in). Its common name refers to the small tooth-like serrations on the inner part of the distal half of the bill. It is shiny green above with a coppery crown. The underparts are whitish streaked dusky. The rounded tail is greyish with a broad black subterminal band and white tips. There is a conspicuous white band on the rump. In males, the bill has a small hook at the tip and more prominent tooth-like spikes; their plumage color averages brighter overall than females. While the green upper parts of this species are iridescent, its plumage is duller than that of most hummingbirds. Within its range, it is essentially unmistakable by the combination of the long, almost straight bill and the dark-streaked whitish underparts.
分类信息
The tooth-billed hummingbird's taxonomic position has been controversial, with some arguing that it should be placed in the subfamily Phaethornithinae, and others that it, together with the two lancebills, should be placed in their own small subfamily, Doryferinae. Today most authorities place it at the beginning of Trochilinae.
- 学名
- Androdon aequatorialis
- 命名信息
- Gould, 1863
- 目
- Caprimulgiformes
- 科
- Trochilidae
- 属
- Androdon
分布与栖息地
The tooth-billed hummingbird is restricted to humid primary forests and nearby second growth. It occurs up to an altitude of c. 1,560 m (5,120 ft). In Ecuador, it is most frequent between 400–800 m (1,300–2,600 ft), while it mainly occurs between 600–1,560 m (1,970–5,120 ft) in Panama, and up to 1,050 m (3,440 ft) in Colombia.
- 迁徙
- Resident species
行为
Rather inconspicuous and generally poorly known. It is a swift flier. It forages from low levels to sub-canopy, where it feeds on nectar from flowers of plant families such Ericaceae and Gesneriaceae. Its main feeding strategy involves trap-lining. The serrated bill is also well adapted for catching small spiders and insects, while the hooked tip of the males' bill is further suited for extracting prey from within rolled leaves and cavities. It has sometimes been seen rapidly gleaning below large leaves, while flicking its tail.<p>Little is known about its breeding behavior, but individuals captured in Colombia in January–March have had enlarged gonads, indicating that they were in breeding condition. In Ecuador, it has been reported that males gather in leks in February–May, which is unusual among members of the subfamily Trochilinae, but frequent among the members of Phaethornithinae. Its calls include a high-pitches tsit-tseé-tsu and penetrating cheet notes.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Caracas Tapaculo
Scytalopus caracae
A typical tapaculo, in bad light a plain and dark small bird with short tail. In good view, mostly plain dark gray with brown and slightly barred belly. Female more barred than male, and juvenile mostly brown and markedly barred. Acts like a mouse, staying near the ground in dense understory of bamboo thickets in cloud forest. Song nasal and noisy, one of the signature sounds in the mountains near Caracas; one version a series of four notes “wu-E-e-wu” and the another a faster series of 6 notes “wu-wU-e-e-wu-wu”; varied calls, the most common a descending mechanical rattle. The only tapaculo in its limited range in the Coastal Cordillera of Venezuela.
Pohnpei Flycatcher
Myiagra pluto
Small monarch flycatcher with uniformly dark glossy plumage. Endemic to Pohnpei Island, where it is the only small all-dark bird on the island; male Micronesian Starling is also glossy and dark, but is much larger, with yellow eyes. Inhabits forests and forest edges, often “flycatching” from a perch close to the ground. Gives a series of bright rising whistles, as well as a squeaky descending chatter and harsh rasping notes.
Masked Antpitta
Hylopezus auricularis
Medium-sized antpitta of floodplain forest, particularly with palmetto understory, along the confluence of the Ríos Madre de Dios and Bení in the Riberalta area. The only antpitta in range with dark chevrons on underparts or a blue-gray cap. Forages on or near the ground, but generally perches 1-2 m up in the understory or midstory to sing at dawn. Visually distinctive in range, but song deceptively similar to, and perhaps indistinguishable from, local songs of Amazonian Antshrike. Call a more distinctive three to four-part descending whistle.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。