Buff-breasted Sabrewing
Campylopterus duidae
Large green and buff-colored hummingbird of the remote tepui highlands of southern Venezuela and extreme northern Brazil. Note the green upperparts, whitish spot behind the eye, and buff tail and underparts. Sexes similar. Common in tepui highlands, in bushes, forest edges, and open areas with small trees. Territorial, often alone or in pairs close to flowers. Voice is a nasal “dui” note repeated many times.
识别特征
The buff-breasted sabrewing is about 10 to 13 cm (3.9 to 5.1 in) long and weighs 5 to 7 g (0.18 to 0.25 oz). Males and females have essentially the same plumage. Both have a straight black bill. Their upperparts are shining bronze-green that is somewhat greener on the head. Their underparts are drab grayish with a tawny tint on the sides. Their central tail feathers are bronze and the outer ones have dull bronze bases and orangy red ends. Subspecies C. d. guaiquinimae has a slightly different green to the upperparts compared to the nominate, and a darker tail.
分类信息
Some authors have placed the buff-breasted sabrewing by itself in genus Loxopterus. It has also been treated as conspecific with the rufous-breasted sabrewing (C. hyperythrus), as forming a superspecies with it, or as the two being sister species. Of the major worldwide taxonomic systems, none have adopted the first three treatments and only the Clements taxonomy has adopted the last.<p>The buff-breasted sabrewing has two subspecies, the nominate C. d. duidae and C. d. guaiquinimae.
- 学名
- Campylopterus duidae
- 命名信息
- Chapman, 1929
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Campylopterus
分布与栖息地
The nominate subspecies of buff-breasted sabrewing is found on the tepuis (isolated table mountains) of southern Venezuela and adjacent northern Brazil. Subspecies C. d. guaiquinimae is found only on Cerro Guaiquinima in southern Venezuela. The species inhabits the foothills and lower elevation evergreen montane forest and the higher elevation scrublands on the tepuis. In elevation it ranges between 1,200 and 1,700 m (3,900 and 5,600 ft).
- 迁徙
- Resident species
行为
The buff-breasted sabrewing is a year-round resident in its habitat.<p>The buff-breasted sabrewing forages from the understory to the mid-strata for nectar and small arthropods.<p>Nests of buff-breasted sabrewings have been noted between about 2 and 3 m (7 and 10 ft) of the ground but no other information is known about its breeding phenology.<p>The buff-breasted sabrewing's song has not been described in words. Its calls include "somewhat buzzy chipping notes 'chzzi' [and] a longer chattering series 'chi-zizi' or 'chizizizizizizi'."
保护状况
- 种群趋势
- unknown
照片
分布
鸟叫声
其他鸟类
Lesser Yellowlegs
Tringa flavipes
Medium-sized shorebird with bright yellow legs. Plumage is essentially identical to Greater Yellowlegs: gray upperparts with white speckling, streaky neck, and white belly. Proportions are most important for identification. Lesser is smaller overall with shorter, narrower, straighter bill, shorter neck, more rounded head, and smaller chest. Forages actively on mudflats and in shallow pools and marshes, often in loose mixed flocks with Greater Yellowlegs. Somewhat more likely to be found in smaller, marshier habitats than Greater, but much overlap. Listen for soft, whistled “tew” calls, typically only one or two notes, unlike the stronger series of notes from Greater.
Maroon Pigeon
Columba thomensis
A large, very dark pigeon with a grayish head, a burgundy body with scattered small white spots, and a bright yellow bill and legs. Female is duller than the male. A scarce species found singly and in pairs in the canopy of primary and secondary forest, more frequently above 1300 meters of elevation; attends fruiting trees. Mostly quiet and inconspicuous, but gives a rolling, growling “crrr-crrow-rrrow-rrrow-rrrow” and other low-pitched pigeon-like cooing. Smaller Sao Tome Pigeon has a gray breast and an iridescent green nape and lacks Maroon Pigeon’s yellow feet and bill.
Brown-backed Flowerpecker
Pachyglossa everetti
Generally uncommon, dull flowerpecker. Drab brown overall with paler underparts, olive-tinged wings, and pale eyes. Found in lowland and foothill forests; favors wetter habitats. Forages actively. Gives hard metallic “tchip” calls.
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