Blue-winged Racquet-tail
Prioniturus verticalis
A rare medium-sized parrot of lowland forest and edge on the Sulu Islands, possibly only remaining on Tawi-Tawi. The two central tail feathers have extended shafts ending in a racket shape. Overall green in color, darker on the back and paler below, with deeper green on the head and a pale bill. Male has a red-and-blue crown patch, but female’s patch is only blue. Occurs together with Blue-naped and Azure-rumped Parrots, but smaller, with a small pale bill. Voice includes various nasal squawks and grating calls.
识别特征
It has mainly dark green plumage on back, an olive/green on its breast and belly. Male birds have a pale blue with small red patch on its forehead and forecrown. Females look identical to the male except, they do not have a red spot on their forecrown. The primary feathers blue on outer webs while the middle tail feathers green. Racquet feathers black tinged with blue. Their side tail feathers are green tipped black. Their bill has a blue-grey hue.<p>It has been described as a rather tame bird and does not usually fear human presence (which has also led to its critically endangered status). They are usually seen in pairs flying over and in the high canopy of trees. It is also rather noisy in flight. This bird feeds on the fruit and flowers of fruiting trees.
分类信息
- 学名
- Prioniturus verticalis
- 命名信息
- Sharpe, 1893
- 目
- Psittaciformes
- 科
- Psittaculidae
- 属
- Prioniturus
分布与栖息地
Its natural habitats are tropical moist lowland forests and subtropical or tropical mangrove forests.It is now assessed as Critically Endangered by the IUCN Red List with population estimates being just 50 - 249 mature individuals. Its main threat is habitat loss and trapping. Once prevalent throughout all the islands of the Sulu Archipelago, the blue-winged racket-tail is now only found on isolated places on Tawi-Tawi due to rapid habitat destruction during the past 200 years.<p>One of this bird's threats is its own tame behavior. This tame behavior is taken advantage of by trappers and has made it an easy target to capture for the illegal exotic pet trade. Deforestation of the blue-winged racket-tail's natural habitat to make way for both legal and illegal logging agriculture, mining, and the uncontrolled settlement by humans has destroyed most of this bird's original habitat.
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
分布
其他鸟类
Blue-naped Parrot
Tanygnathus lucionensis
Medium-sized parrot with a huge candy-red bill. Bright green overall, with eye-catching blue-and-yellow edgings on the wing feathers. Namesake sky-blue patch, which extends from the upper nape to the back of the crown, can be difficult to see. Inhabits lowland and foothill forests and other wooded areas, often on small offshore islands. Forages in flocks, screeching loudly to one another to stay in contact. Native to the Philippines and small offshore islands in Malaysia; feral population established in Kota Kinabalu. Declining across much of its range, and extirpated in some areas.
Sandstone Shrikethrush
Colluricincla woodwardi
Large terrestrial bird with rather long bill, long tail, and strong legs. Brown above, peach-buff below, with grayish head and breast. Inhabits sandstone areas of northern Australia, where it is only likely to be observed on rocks, not in forest. Similarly sized Gray Shrikethrush has shorter tail, lacks warm tones below. Often sings loudly from the top of sandstone towers and rocky cliffs, a rapid, two-note whistle.
Variable Chachalaca
Ortalis motmot
Slender, long-tailed, chickenlike bird that is often seen in small groups. Grayish-brown overall with a warmer chestnut head. At close range note the bare red throat patch and pinkish legs. Found in second-growth woodlands, river edges, and disturbed habitats including farms and villages. Occurs in lowlands of northern South America, north of the Amazon river. Somewhat similar to Spix’s and Marail Guans, but Variable Chachalaca is much smaller and is unlikely to be in canopy of tall forest. Usually quiet, but groups call loudly to each other early in the morning; unmistakable call can be heard for more than a kilometer.
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