Numfor Paradise-Kingfisher
Tanysiptera carolinae
A long-tailed kingfisher of forest and gardens on Numfor Island where it is the only paradise-kingfisher. Dark blue body with deep blue crown and shoulder patch, bright red bill and long, white raquet-tail, rump and undertail. Like other paradise-kingfishers, slowly pumps its tail while perched. Song, a rising and quickly accelerating series of nasal notes, starting slowly and ending in a rapid trill “waaaaaak wak ak k-k-k-k-k-k…..”. Pairs fan and raise tail while duetting.
识别特征
The Numfor paradise kingfisher grows to a length of 34 to 38 cm (13 to 15 in) including its long tail. The sexes look alike and have purplish-blue upper parts and similarly coloured underparts, with the lower back, rump, vent region and tail being white. The iris is brown, the bill red and the legs and feet greenish-brown. The juvenile has duller purple-blue plumage with rufous and buff underparts, a white rump and blackish tail. The voice is said to be similar to the call of the common cuckoo (Cuculus canorus).
分类信息
- 学名
- Tanysiptera carolinae
- 命名信息
- Schlegel, 1871
- 目
- Coraciiformes
- 科
- Alcedinidae
- 属
- Tanysiptera
分布与栖息地
The Numfor paradise kingfisher is found only on Numfor, a 335 km2 (129 sq mi) island in the Biak Island group off the northwestern coast of Papua Province, Indonesia. Its typical habitat is forest, light woodland, agricultural land and coastal vegetation. It seems that these birds originated from a few founding T. galatea birds which arrived on the island and became isolated from the mainland birds. These then underwent a "genetic revolution". There were no particular biotic factors involved, but there was sufficient variation among the founding birds to encourage speciation, and the assortment of genes that the birds received was later undisturbed by further inflow of alien genes.
- 迁徙
- Resident species
行为
The diet of the Numfor paradise kingfisher mostly consists of snails and large insects such as grasshoppers and beetles. Its behaviour and ecology have been little studied and are presumed to be similar to those of the common paradise kingfisher (Tanysiptera galatea) which is found on the mainland of New Guinea.
保护状况
- 种群趋势
- declining
照片
分布
其他鸟类
Chiloe Wigeon
Mareca sibilatrix
Handsome and distinctive duck. Sexes look similar, but male averages brighter. Note the striking face pattern (duller on young and on adults in late summer), bright rusty sides, and bold white forewing patches that show in flight. Often common in wetlands, marshes, at lakes, and along river mouths. Associates readily with other waterfowl, but more often seen on shore, grazing in grassy areas.
Rufous Potoo
Phyllaemulor bracteatus
Rarely observed, nocturnal bird of lowland rainforest. Considerably smaller than other potoos, and distinguished from them by bright rufous plumage spotted with white. Inhabits middle and upper levels of tall forest, especially in regions with sandy soils, where it sallies from exposed perches for flying insects. Roosts during the day on thin branches and camouflages itself remarkably well by swaying with the breeze as if to mimic a suspended dead leaf. Voice, unlike that of other potoos, is a rapid, descending series of hoots with a bubbling quality, given infrequently and only for short periods. Unlikely to be confused with anything else; plumage recalls Oilbird, but potoo is much smaller and perches vertically.
Scaly-breasted Bulbul
Rubigula squamata
Handsome and unmistakable; olive-yellow wings, black head, white throat, and black-scaled white underparts. Predominantly found in hilly broadleaf evergreen forest, only occasionally and very localized in lowlands. Often undertakes local movements. Generally gleans fruits from mid-levels up into the canopy. Unlike many bulbuls, does not have a vibrant song: gives occasional high-pitched chirps, chips, whistles, and short trills.
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