Snowy-bellied Hummingbird
Saucerottia edward
Medium-sized hummingbird, distinctive within limited range: overall shimmering green with sharply defined white belly. Wings are browner and rump is coppery. Sexes alike. Found around open forest edges and second growth, usually singly.
识别特征
The snowy-bellied hummingbird is 8 to 11 cm (3.1 to 4.3 in) long. Males weigh 5 to 5.4 g (0.18 to 0.19 oz) and females 4.3 to 5.2 g (0.15 to 0.18 oz). Both sexes of all subspecies have a straight blackish bill whose mandible has a reddish base. Adult males of the nominate subspecies S. e. edward have bronze-green upperparts that are especially coppery in the back and rump. Their tail is bronze to coppery and sometimes has a purple sheen. Their throat and chest are glittering golden green, the belly has a V-shaped white center, and the undertail coverts are rufous. Adult females are similar to males but with a less intense green on their upperparts, a more whitish throat and undertail coverts, and light green tips on the outer tail feathers.<p>Subspecies S. e. niveoventer is slightly larger than the nominate and its tail is bluish black to purplish black. S. e. collata has less contrast between the green and copper of the back than the nominate and brownish undertail coverts. S. e. margaritarum has paler undertail coverts than the nominate and a bronze to bronze-green tail.
分类信息
The snowy-bellied hummingbird was formerly placed in the genus Amazilia. A molecular phylogenetic study published in 2014 found that the genus Amazilia was polyphyletic. In the revised classification to create monophyletic genera, the snowy-bellied hummingbird was moved by most taxonomic systems to the resurrected genus Saucerottia. However, BirdLife International's Handbook of the Birds of the World retains it in Amazilia.<p>The snowy-bellied hummingbird has these four subspecies:<p>Subspecies S. e. niveoventer has been suggested as a separate species based on the color of its tail but this treatment has not gained acceptance.
- 学名
- Saucerottia edward
- 命名信息
- (Delattre & Bourcier, 1846)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Saucerottia
分布与栖息地
The subspecies of snowy-bellied hummingbird are found thus:<p>The snowy-bellied hummingbird inhabits different landscapes across its distribution. In Costa Rica and western Panama it favors semi-open areas such as savanna, scrublands with scattered trees, edges and clearings of primary forest, secondary forest, coffee plantations, and gardens. In elevation it ranges from sea level to 1,600 m (5,200 ft). S. e. collata inhabits fields with low herbs and bushes at elevations between 500 and 850 m (1,600 and 2,800 ft). On islands, S. e. margaritarum inhabits semi-open to open landscapes like abandoned fields and also mangroves; on the mainland it is found in rainforest. In elevation it ranges between sea level and 700 m (2,300 ft).
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: stable.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Blue-throated Goldentail
Chlorestes eliciae
Uncommon and local, rather small hummingbird of humid forest edge, plantations, and woodlands in tropical lowlands and foothills. Perches and feeds mainly at middle to upper levels in shady understory and at edges. Note the bright red bill and greenish-gold tail (which often looks grayish). Male has violet gorget. Female has violet throat spotting, but often these areas look rather dull and grayish unless they catch the light.
Junin Tapaculo
Scytalopus gettyae
Poorly known Peruvian endemic found only in high Andean cloud forest northeast of the city of Huancayo. It was described to science in 2013. Adult male is plain gray, lacking the rufous barring on the lower underparts shown by Rufous-vented Tapaculo and Trilling Tapaculo. Female plumage not yet known with certainty. Younger birds are heavily marked with bars or scales. Best identified by range and voice. Typical song is a lengthy series that starts out with simple notes and gradually transitions into sputtering bursts.
Crow Honeyeater
Gymnomyza aubryana
Large, mostly black honeyeater that is now rare and local in remnant patches of primary forest. Black plumage accentuated by patches of bright red facial skin. More likely to be mistaken for a New Caledonian Crow than other species of honeyeater on the island, however the more heavily-built crow lacks the red facial skin and has a notably thicker bill than the honeyeater. Not very vocal; the loud, ringing song is mostly heard during a short period in the breeding season (September-October). Also gives a harsh, crow-like rasping call.
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