White-necked Hawk
Buteogallus lacernulatus
Medium-sized pied hawk of dense Atlantic Forest. Note yellow bill base, white head and belly, and black back. Tail is white with a black sub-terminal band. Can be confused with Mantled Hawk which is larger and lacks the dark terminal tail band. Juveniles have dark streaks on the crown.
识别特征
The white-necked hawk is 43 to 48 cm (17 to 19 in) long with a 91 to 101 cm (36 to 40 in) wingspan. Males and females have the same plumage, though females are about 4% larger than males. Adults have a white head and underparts and black upperparts. Their tail is black with a wide white band in the middle. Their eye is brown or pale yellow and their legs and feed yellow. Immatures are similar to adults but with dark streaks on their crown and neck, brown tips on some upperparts feathers, and white barring on the black base of their tail.
分类信息
The white-necked hawk was for a time placed in genus Leucopternis but molecular studies placed it in Buteogallus. A 2009 paper proposed the new monotypic genus Amadonastur for it but this treatment has not been accepted by worldwide taxonomic systems. The white-necked hawk is monotypic.
- 学名
- Buteogallus lacernulatus
- 命名信息
- (Temminck, 1827)
- 目
- Accipitriformes
- 科
- Accipitridae
- 属
- Buteogallus
分布与栖息地
The white-necked hawk is found discontinuously in southeastern Brazil from Paraíba south to Paraná state; it might previously have occurred further south in Santa Catarina state. It mostly inhabits dense primary Atlantic Forest but has been recorded in secondary forest. In elevation it generally ranges from sea level to at least 900 m (3,000 ft) and locally to 1,300 m (4,300 ft) in Minas Gerais.
- 迁徙
- Resident species
行为
The white-necked hawk is generally sedentary but there is some evidence of wandering or dispersal from its usual habitat.<p>The white-necked hawk takes its prey on the ground, dropping from a perch that may be as low as 1.5 m (4.9 ft) high. It is known to follow army ants and monkey troops to prey on what they flush. The data on its diet are inconclusive. Some authors believe that arthropods are its primary prey. Others maintain that it is more of a generalist with a diet of arthropods, reptiles, amphibians, mammals, birds, and snails.<p>Nothing is known about the white-necked hawk's breeding biology.<p>As of late 2022 xeno-canto had only one recording of a white-necked hawk and the Cornell Lab of Ornithology's Macaulay Library had three. Its vocalizations have not been transcribed.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Biak Megapode
Megapodius geelvinkianus
A small, dark scrubfowl of forest and disturbed habitats on the Bay Islands where the only member of its family. Sooty gray plumage, bare red to gray face, slight crest at the back of the head, reddish legs, and yellowish bill. It scrapes the forest floor with its large feet to uncover invertebrates. More often heard than seen. Vocal, giving varied parrotlike squeals. A common call is 2 tuneless yelps similar to New Guinea Scrubfowl, the first note higher than the second.
Rusty-fronted Canastero
Asthenes ottonis
Small, long-tailed bird of high-elevation scrub. Light brown, with reddish wings and tail and small reddish patches on the throat and forehead. Prefers dense shrubby areas, including Polylepis woodland, where it forages secretively within bushes. Its small size, lack of strong streaking, and long, reddish tail distinguish it from similar species within its range. Listen for its energetic song, an accelerating series of high, harsh notes.
Besra
Tachyspiza virgata
A medium-sized Accipiter of forested areas. Adult grayish brown above with a grayer head and neck, pale underparts with orange barring and blotches, and distinctive dark line in center of white throat. Coloration overall recalls Crested Goshawk, but the goshawk is much bulkier. Juvenile browner overall, with vertical brown streaking on the breast and belly.
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。