Red-shouldered Macaw
Diopsittaca nobilis
Small macaw, easily confused with a large parakeet. Largely green apart from a contrasting bare white face, blue crown, and red shoulders. The bill varies in color between regions; all dark in the northern subspecies, with a paler upper mandible and dark lower mandible in other subspecies. Typically found foraging in groups or pairs in savannas, palm groves, and occasionally in urban areas. Has a loud rasping call.
识别特征
The red-shouldered macaw, at 30 cm (12 in) long and 165 g (5.8 oz) weight, is the smallest of all the macaws. Like all macaws, it has a long narrow tail and a large head. It has bright green feathers on the body, with dark or slate blue feathers on the head just above the beak. The wings and tail have feathers that are bright green above and olive-green below. The leading edges of the wings, especially on the underside, are red. (These red feathers appear at puberty.) Their eyes are orange, and the skin around the eyes is white without feathers, just as in the larger macaws. This bare patch of facial skin is smaller in proportion to the head than the one seen in most larger macaws. The Hahn's macaw and noble macaw can be distinguished by the Hahn's having a black upper mandible and the Noble's having a lighter, horn-colored upper mandible.<p>Their natural vocalizations are more akin to screeches than they are to whistles.
分类信息
The red-shouldered macaw was formally described in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae. He placed it with all the other parrots in the genus Psittacus and coined the binomial name Psittacus nobilis. The red-shouldered macaw is now the only species placed in the genus Diopsittaca that was introduced in 1912 by the American ornithologist Robert Ridgway. The genus name combines the Ancient Greek dios meaning "noble" with psittakē meaning "parrot". The specific epithet noblilis is Latin meaning "noble". There are two distinct subspecies, D. n. nobilis (Hahn's macaw) and D. n. cumanensis (noble macaw), and some with longer wings might represent a poorly differentiated subspecies, D. n. longipennis, which intergrades with D. n. cumanensis in central Goiás, Brazil. The species is sometimes subsumed into the genus Ara.<p>Taxonomy proposed by BirdLife International splits the red-shouldered macaw into two species.
- 学名
- Diopsittaca nobilis
- 命名信息
- (Linnaeus, 1758)
- 目
- Psittaciformes
- 科
- Psittacidae
- 属
- Diopsittaca
分布与栖息地
- 迁徙
- Resident species
行为
Red-shouldered macaws are very kind natured. Their personality is similar to the large macaws.<p>The red-shouldered macaw nests in a hole in a tree. There are usually three or four white eggs in a clutch. The female incubates the eggs for about 24 to 26 days, and the chicks fledge from the nest about 54 days after hatching.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
White-throated Ground Dove
Pampusana xanthonura
This dove is accurately but misleadingly-named, for the male’s whole upper body is white, not just his throat; he also has a wine-red patch on the back and upperwing. Female is dirt-brown with darker back and wings. Inhabits the Northern Mariana Islands and Yap, in the Caroline Islands. Found in both pristine and degraded forest, often near habitated areas. Forages primarily on the ground on Yap and in trees and bushes on the Marianas. Coos are deep and sonorous.
Bicolored Hawk
Astur bicolor
Widespread but uncommon forest hawk of tropical America. Adults are mostly gray, darker on crown and upperparts, with two pale tail bands and rufous thighs that are often hidden from view. Belly is tinged rufous and faintly barred in the southern part of its range. Immature looks remarkably like a forest-falcon, but note its yellow eye and lack of dark crescent on face. Overlaps with the similar Rufous-thighed Kite in parts of South America. Bicolored Hawk is larger, lacks a vertical stripe on the throat, usually stays inside forest, and almost never soars. Feeds mainly on birds and is generally quiet and elusive. Birds from central and southern Chile as well as adjacent parts of Argentina are now considered a separate species, Chilean Hawk.
White-headed Vulture
Trigonoceps occipitalis
A medium-sized, mostly dark vulture with an angular, naked, pale pink head and bulky coral-colored beak. In flight, the adult’s white “armpits” extend out as a stripe along the middle of the underwing; the larger females differ from males by having all-white innermost flight feathers. Widespread in open country but declining rapidly outside of protected areas. Often one of the first vultures to arrive at a carcass but also scavenges the kills of eagles; sometimes hunts and kills small mammals, birds, and reptiles.
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。