White-throated Piping-Guan
Pipile grayi
Large forest guan found in far southeastern Peru, Bolivia, southwestern Brazil, and northern Paraguay, often along rivers. Plumage is mostly black with a white face, crown, nape, and wing patch. It has a bare patch of skin on the throat that may be light blue or white. On older birds this skin patch ends in a wormlike wattle that dangles below the neck. Formerly treated as a subspecies of Blue-throated Piping-Guan; it can be distinguished by the pure white (not buff-streaked) crown and nape, paler blue or white throat patch, and the wormlike wattle (on adults). In some areas, including the Pantanal, individuals with blue and red throat patches can be found; these are likely hybrids with Red-throated Piping-Guan. Mostly arboreal, but sometimes descends to the ground to feed or drink. Song, often given at dawn or dusk, is a rising series of clear whistles. Occasionally rattles its wings loudly in flight.
识别特征
The white-throated piping guan is 60 to 69 cm (24 to 27 in) long. The sexes are alike. Most of their plumage is blackish with a light olive to olive green gloss that is strongest on the shoulders, wings, and tail. Their forehead, crown, and nape are white, as are the fringes of their breast feathers. The crown feathers are hair-like and have black or brownish black shafts that show as streaks The outer wing coverts are also white and show as a large patch on the folded wing; the inner coverts have white spots. White to cobalt blue bare skin surrounds the dark reddish brown eye. Bare skin forming a dewlap is also white to cobalt blue. Their bill can be pale blue with a black tip or black with a pinkish and blue base. Their legs are brownish red.
分类信息
The genus Pipile has been treated as including anywhere from one to five species depending on the criteria used by the various authors and taxonomic systems. At various times from one to four of them have been treated as subspecies of the Trinidad piping guan (P. pipile). By early 2023, major worldwide taxonomic systems had settled on five species including the white-throated piping guan, which had been considered a subspecies of the blue-throated piping guan (P. cumanensis). The white-throated piping guan is monotypic according to the worldwide systems. However, the South American Classification Committee of the American Ornithological Society retains the white-throated piping guan as a subspecies of the blue-throated.
- 学名
- Pipile grayi
- 命名信息
- (Pelzeln, 1870)
- 目
- Galliformes
- 科
- Cracidae
- 属
- Pipile
分布与栖息地
The white-throated piping-guan is found from extreme southeastern Peru through north-central and eastern Bolivia into southwestern Brazil and northern Paraguay. It inhabits humid tropical forest of the Amazon Basin including terra firme, várzea, and gallery types, and also cerrado woodland. It almost always occurs within about 100 m (330 ft) of rivers. In elevation it reaches 1,500 m (4,900 ft) in Bolivia.
- 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
鸟叫声
其他鸟类
Socorro Mockingbird
Mimus graysoni
Only on Socorro Island, where in danger of extinction due to feral cats and overgrazing. Largely restricted to forest and edge on higher slopes of the island. Note the rather plain gray-brown head and upperparts, narrow whitish wingbars, whitish underparts with faint dusky streaks on the flanks, and narrow paler tail tips. Lacks the big white wing and tail flashes of Northern Mockingbird, which also occurs on the island.
Spotted Crake
Porzana porzana
Medium-sized crake with dense whitish spotting and speckling on the neck and breast. Also note greenish legs and short yellow bill with a reddish base. Breeds in freshwater marshes and wet meadows with dense vegetation cover, but migrants and wintering birds may also be found in ephemeral wetlands and brackish marshes. Retiring and rarely seen, but sometimes comes out at muddy edges, mainly early and late in the day. Song is a series of repeated “huit, huit, huit” notes.
Meratus White-eye
Zosterops meratusensis
A recently described species from montane rainforest in SE Borneo. Overall olive-green with a brighter yellow throat, undertail and belly stripe. White eyering, pink-orange lower bill with yellow and black lines between. Forages in groups in the lower and mid-storey, joining mixed-species flocks. Co-occurs with Hume’s White-eye but Meratus White-eye has an olive-green rather than gray belly. Song is a warbling series of high notes and call a “zip” note.
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