Philippine Honey-buzzard
Pernis steerei
A fairly large raptor of lowland and montane forest. Brown above with a heavily streaked chest, a barred belly, a fairly long flattened crest coming from the back of the head, and piercing golden eyes. In flight, note barred, bulging wings and fairly long barred tail with a broad terminal band. Juveniles are much paler. Remarkably similar to Philippine Hawk-Eagle, but in flight Philippine Honey-buzzard has a narrow head which projects more from the wings. Voice consists of a drawn-out, two-noted “weeeeeeee lew” repeated at intervals.
识别特征
The body ranges from 52.5 cm to 55.3 cm in males and 52 cm to 59 cm in females; the wingspan is 2.1 times total length.<p>From above, the tail and broad rounded wings appear umber mingled with white; from below, both are pale and dark-banded, including a broad terminal band on the tail. The chest, belly and head are white and streaked, or pale to cream in juveniles. A dark brown crest extends from the back of the head and distinguishes P. steerei from P. celebensis, alongside paler plumage on the head and back. Eyes sport a bright golden iris in adults and a brown line running through from the beak to the back of the head. Raptorial dark grey beak and yellow legs, with claws averaging 20 to 22 cm. As expected from its short tarsus, narrow bill and square-cut tail, three indicators of foraging strategy, P. steerei is either seen perched upright on large branches or soaring.<p>Subspecies P. s. winkleri displays more typical raptorial sexual dimorphism than nominate P. s. steerei, as well as a juvenile-like homogenous brown plumage.
分类信息
P. steerei is one of four species of honey-buzzards in Pernis. The common name of the genus likely stems from their diet of bee and wasp larvae.<p>Originally considered a subspecies of Pernis celebensis, the Philippine honey-buzzard was recently recognised as its own species in light of mitochondrial DNA evidence showing 3.3% genetic distance between the two birds. A split had been proposed even earlier, as authors noted the stark differences in plumage and geographic isolation between the barred and Philippine honey-buzzards. A previous subspecies of P. celebensis, P. c. winkleri, was simultaneously recognised as belonging under P. steerei alongside the nominal P. s. steerei.<p>A very short time saw P. steerei labelled Steere's honey-buzzard before Gamauf & Haring's split was popularised and, with it, the name Philippine honey-buzzard.
- 学名
- Pernis steerei
- 命名信息
- Sclater, WL, 1919
- 目
- Accipitriformes
- 科
- Accipitridae
- 属
- Pernis
分布与栖息地
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: declining.
- 种群趋势
- declining
照片
分布
其他鸟类
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Thamnophilus bernardi/shumbae
Stout-billed antshrike found in arid areas of western Ecuador and northwestern Peru. Male is brown and white with a black head, throat, and breast; tail is black with a white tip. Female is brown and buff with a black face speckled with white. Both sexes have a bushy crest and bold wing markings. Birds in the Marañon drainage look a bit different; males have paler faces and less black on the underparts; females have whiter underparts. Inhabits deserts, dry scrub, and deciduous forest understory. Song is a very fast, nasal trill that ends on a longer, higher note.
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Large, chunky weaver with a long, heavy bill. Extremely variable geographically. Always shows a pale eye, some black on the face, a yellow breast, and yellow edges on the wing feathers. The color of the crown can be yellow, black, or olive. The back varies from plain olive to heavily-streaked olive to solid black. The belly can be yellow or white. Found mainly at middle and high elevations, in woodland, moist scrub, gardens, cultivation, and forest edge. Vocalizations are typical of weavers: “chet” notes and a sizzling, “radio static” song. Highly variable, and can be confused with several other weaver species, but can usually be identified by combination of black face, yellow throat, and large size.
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