Biak Paradise-Kingfisher
Tanysiptera riedelii
A fairly common, long-tailed kingfisher of primary and degraded forest on Biak Island where it is the only paradise-kingfisher. White underparts, rump and long tail with large spatules, thick red bill, dark blue upperparts and pale blue flecked head, shoulder patch and narrow part of the tail. It sits still in the midstorey where it pumps its tail up and down. Calls, a slightly arhythmic series of soft “piu” notes, or a rising and accelerating series of sharper “puuu puu pipipipipipi! often given in duet.
识别特征
The adult Biak paradise kingfisher is about 14 in (36 cm) including its long tail. The crown, nape and sides of the head as well as the upper parts are a bright glossy turquoise-blue. The rump and the basal parts of the rectrices are white and the underwings are black. The two central tail feathers are greatly elongated and have bare shafts which flare out at the tip into racket-like lobes. The bird's underparts are white and the long, stout bill is red.
分类信息
- 学名
- Tanysiptera riedelii
- 命名信息
- Verreaux, J, 1866
- 目
- Coraciiformes
- 科
- Alcedinidae
- 属
- Tanysiptera
分布与栖息地
The Biak paradise kingfisher is found only on the island of Biak in Indonesia. 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 adult Biak paradise kingfisher has been little studied but its diet and behaviour are thought to be similar to the closely related common paradise kingfisher (Tanysiptera galatea) which is found on the mainland of New Guinea. Some authorities consider it to be subspecies of that bird. The common paradise kingfisher perches on a low branch in the forest and swoops down to scoop up insects and earthworms off the forest floor. It nests in a cavity of a tree, in a hollow branch or in a hole excavated in an arboreal termite nest.
保护状况
- 种群趋势
- declining
照片
分布
其他鸟类
Crimson-crested Woodpecker
Campephilus melanoleucos
Large red-headed woodpecker, widespread from Panama to Paraguay. Found in lowland forest and edges, often perched conspicuously high up on a snag or large tree. More apt to be seen in open habitats compared with Red-necked Woodpecker, but significant overlap. Male is distinctive with barred underparts and almost entirely red head with a black-and-white patch on the cheek. Female distinguished from other large woodpeckers (such as Lineated) by very broad white stripe on face and white V on back. Listen for loud knocking drum as well as various chattering noises.
Imitator Sparrowhawk
Tachyspiza imitator
A medium-sized black-and-white sparrowhawk with an entirely black back, chest, and hood and a white underside. Prefers dense forest interiors up to 1000 meters of elevation. Very similar to Pied Goshawk, but prefers less open habitats and has a black throat. In flight, Imitator Sparrowhawk has a thick dark rear edge to the underwing, compared to Pied Goshawk’s relatively white underwing. Imitator’s voice is relatively poorly known, but apparently vocally similar to other goshawks; a series of loud piercing whistles has been reported.
Bearded Vulture
Gypaetus barbatus
Breathtakingly majestic inhabitant of high and remote mountain ranges, where they build large nests on cliff ledges or in caves. Even as a distant speck, this is an unmistakable raptor, with an almost albatross-like wing shape and span, coupled with a long diamond-shaped tail. Adults are orange-rust below with a dark underwing, and slate gray above. The young are gray with a dark head. Cruises along ridgetops on flat wings, sometimes arched downwards.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。