Buff-tailed Coronet
Boissonneaua flavescens
Medium-sized hummingbird, mostly dark green with obvious buffy underwing and mostly buffy tail. Fairly short, straight bill. Sexes similar. Found in cloud forest from Venezuela to Ecuador, mostly from 1,500–2,400 m. Usually forages in middle to upper levels of trees. Visits feeders, where it aggressively defends its territory against other hummingbirds.
识别特征
The buff-tailed coronet is 11 to 12 cm (4.3 to 4.7 in) long and weighs 7.3 to 8.8 g (0.26 to 0.31 oz). Both sexes have a short, straight, black bill and a small white spot behind the eye. Males of the nominate subspecies are mostly shining green, with a buff belly spotted with green. The underwing coverts are cinnamon and show in flight. The central tail feathers are bronzy and the rest buff with bronze tips and edges. It has small white tufts on the legs. The nominate female has more buff on the underparts and the bronze of the tail is less extensive. The buff parts of both sexes of B. f. tinochlora have a cinnamon cast and there is more bronze on the tail feathers' tips.<p>
分类信息
The buff-tailed coronet shares genus Boissonneaua with two other coronets, the chestnut-breasted (B. matthewsii) and velvet-purple (B. jardini). It has two subspecies, the nominate B. f. flavescens and B. f. tinochlora.
- 学名
- Boissonneaua flavescens
- 命名信息
- (Loddiges, 1832)
- 目
- Apodiformes
- 科
- Trochilidae
- 属
- Boissonneaua
分布与栖息地
The nominate subspecies of buff-tailed coronet is found from the Andes of western Venezuela's Mérida state south and west through all three Andean ranges of Colombia. B. f. tinochlora is found from southwestern Colombia south along the west slope of the Andes as far as Cotopaxi Province in central Ecuador and also in a few places on Ecuador's eastern Andean slope. The species inhabits the interior and edges of humid to wet montane forest, cloudforest, and elfin forest. It also occurs in more open shrubby landscapes. In elevation it ranges from 2,000 to 3,500 m (6,600 to 11,500 ft).
- 迁徙
- Resident species
行为
The buff-tailed coronet is sedentary.<p>The buff-tailed coronet is highly territorial, though it may share feeding at a flowering tree with other hummingbirds. It typically forages in the mid-story but also feeds in the canopy. Its main nectar sources are in genera Cavendishia, Palicourea, Disterigma, and Huilaea. It feeds by clinging to the flower, holding its wings open for a second or two after landing. In addition to nectar it captures small insects by hawking from a perch.<p>Buff-tailed coronet breeding behavior has been recorded between November and March. It builds a cup nest of moss and lichen that is usually attached to a branch between 3 and 10 m (10 and 30 ft) above the ground. The female incubates the clutch of two eggs.<p>What is thought to be the buff-tailed coronet's song is "a continuous series of single high-pitched 'tsit' notes". It sometimes sings with several others of its species nearby. It also makes a "squeaky twittering, with rising piping notes and stuttering rattles", especially when interacting with other hummingbirds.
保护状况
- 种群趋势
- unknown
照片
分布
鸟叫声
其他鸟类
Rufous-tailed Flycatcher
Myiarchus validus
A medium-sized woodland species that prefers moist forests where it typically “flycatches” from perches in thick foliage beneath the canopy. Note its bright rusty tail and the extensive rust on its wings. The Sad Flycatcher is much smaller-bodied and smaller-billed and lacks the rusty tail and wings. The similar Stolid Flycatcher is also smaller-billed and smaller-bodied with more limited rust on tail and wings. Rufous-tailed Flycatcher has a darker gray head and chest than either Sad or Stolid Flycatchers. Vocalizations include a slightly squeaky, emphatic “or-will,” a whistled “pi-pi-pi-pi-pee-pee-pee-pee,” and a harsh squeaky “pew” given in series, plus brief emphatic twitters.
Rufous-browed Flycatcher
Anthipes solitaris
Unique-looking flycatcher with a gleamingly clean white throat and a strong rusty orange tinge to the brow and forehead. Overlaps with closely related White-gorgeted Flycatcher but lacks that species’s gray face and black border to the white throat patch. Inhabits foothill and montane forests, where it forages close to the ground in lower vegetation. Both flycatches and gleans for prey more actively. Song is a high, thin series of whistles; a simple version is “tee-tee-tew’, to which additional phrases may be added. Vocal for a flycatcher, and calls often, giving harsh rattles, chips and chiks, and high thin notes.
Bronze-tailed Starling
Lamprotornis chalcurus
A beautiful, glossy green-and-purple starling. There is a stripe through the eye that sometimes looks black and sometimes deep purple. The eye is reddish-orange. Juveniles are dull and blackish. Found in a wide variety of savanna habitats, from moist broadleaf woodland to dry thorn savanna. Also found in villages, towns, and cultivated areas. Very similar to Lesser and Greater Blue-eared Starlings, but separated by the purple rather than greenish tail and the darker reddish eye. The vocalizations include rising whistles, nasal whines, and long series of chattering notes.
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