Chestnut-bellied Hummingbird
Saucerottia castaneiventris
Endangered hummingbird with a small range in the northern part of Colombia’s eastern Andes and in the San Lucas Mountains. Note the reddish-orange belly and bright rusty tail. Females and younger birds are duller than adult males and might be confused with Rufous-tailed Hummingbird, but lack green on the flanks. Inhabits lighter woodland and forest edge, and generally avoids dense forest.
识别特征
The chestnut-bellied hummingbird is about 9 cm (3.5 in) long. Both sexes have a black bill with a red base to the mandible. The adult male has bronze-green upperparts and a chestnut tail. Its throat and upper breast are glittering green, the belly chestnut, and the undertail coverts chestnut with greenish edges. The female is similar but with a slightly paler belly and white bars near the end of some throat feathers. Immatures are similar to the female with rufous edges on the feathers of the neck and rump.
分类信息
The chestnut-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 chestnut-bellied hummingbird was moved by most taxonomic systems to the resurrected genus Saucerottia. However, BirdLife International's Handbook of the Birds of the World (HBW) retains it in Amazilia.<p>The chestnut-bellied hummingbird is monotypic.
- 学名
- Saucerottia castaneiventris
- 命名信息
- (Gould, 1856)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Saucerottia
分布与栖息地
The chestnut-bellied hummingbird appears to be restricted to the dryer parts of the Magdalena Valley of Colombia, with a core known range in the Chicamocha, Suárez and Chucurí River valleys. As of 2019 it was known from at least 14 sites. However, it is not regularly documented at most of them, perhaps because of unknown seasonal movements. Most records are from arid brushy canyons with a few from the lower edges of humid montane forest. Most records are from elevations between 500 and 1,500 m (1,600 and 4,900 ft) but some extend to between 340 and 2,200 m (1,100 and 7,200 ft) and one is at 120 m (390 ft).
- 迁徙
- Vertical migration
行为
The chestnut-bellied hummingbird is believed to move from higher to lower elevations after the breeding season.<p>Details are lacking about the chestnut-bellied hummingbird's feeding technique and diet, but it is known to take nectar from Salvia and Trichanthera. It also feeds on small arthropods.<p>Specimens of chestnut-bellied hummingbird in breeding condition suggest that its breeding season is from August to December. Nothing else is known about its breeding phenology and its nest has not been described.<p>The chestnut-bellied hummingbird's song is "a short rhythmic phrase of three squeaky notes that sounds like a rusty door-hinge, 'krey-ki-cheep ... tsew ... krey-ki-cheep ...'." It also makes calls described as " a slightly buzzy 'tzee', a high-pitched 'see' and a stuttering high-pitched chattering."
保护状况
- 种群趋势
- declining
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.
Red-throated Pipit
Anthus cervinus
Small pipit; adults distinctive with rusty-red face and throat (paler in winter), contrasting with streaked white belly. The back is heavily streaked black, white, and brown, and the rump is also streaked. Breeds in mountains and on the tundra in open grasslands and boggy areas with willows. Winters in a range of damp, open habitats, such as wet fields, marshlands, pastures, and riverbanks. Camouflaged and difficult to spot on the ground. When flushed may fly a long way uttering a far-carrying "pssiiih" call.
Parasitic Weaver
Anomalospiza imberbis
Odd little short-tailed and chunky-billed member of the indigobird family. The male is yellow, with dark wings and tail, while the female is brown and streaky on the back and buff on the face and underparts. Found in moist grassland and open savanna. Uncommon across its range. Indistinct song consists of short, rasping phrases. Male could be confused with canaries but has an all-black bill. Female resembles female bishops but has a shorter and thicker all-black bill.
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