Chestnut-flanked Sparrowhawk
Aerospiza castanilius
A tiny hawk with a dark slaty back, an owl-like facial expression, and dense red-brown and gray barring on the breast with redder flanks. These dark colors contrast with the hawk’s yellowish face and legs. Rarely encountered in thick forest, where it can sometimes be seen attending to driver ant swarms. This species closely resembles the larger Red-chested Goshawk, but note the small size and, if possible, look for the long inner claw relative to the other toes. Vocalizations undescribed.
识别特征
Chestnut-flanked sparrowhawk has blackish grey upperparts with a very distinctive pattern on the underparts; the breast and belly are heavily barred grey and brown, with chestnut colored flanks. The throat is white and the head is rather broad compared to similar species. The cere is yellow as is the thin eyering which surrounds the red eye. Females and juveniles are browner. They sit 25 cm (9.8 in) tall and have a wingspan of 60 cm (24 in).
分类信息
Closely related to the African goshawk Accipiter tachiro and the red-chested goshawk Accipiter toussenelii, albeit smaller than either of those species. It is normally regarded as monotypic, although some authorities recognise the smaller birds in the Congo Basin as the subspecies Accipiter castanilius beniensis.
- 学名
- Aerospiza castanilius
- 命名信息
- Bonaparte, 1853
- 目
- Passeriformes
- 科
- Estrildidae
- 属
- Aerospiza
分布与栖息地
The chestnut-flanked sparrowhawk occurs in west central Africa from southern Nigeria through Cameroon and Gabon to Democratic Republic of Congo. It is said to occur in the Upper Guinean forests west of Nigeria but this has not been confirmed. The chestnut-flanked sparrowhawk is found mainly in lowland tropical rainforest, mainly in the middle storey but it can adapt to dense secondary growth and will approach habitation in the forest. It is found up to 750 m (2,460 ft) above sea level.
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
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其他鸟类

Glossy Antshrike
Sakesphorus luctuosus
A large antshrike with a spiky crest, an often partially concealed white wingbar, and a white-tipped tail. Males are entirely glossy black while females have a chestnut crest. Inhabits the understory of seasonally and permanently flooded forest with vine tangles and dense thickets, where its far-carrying song, an accelerating series of “tah” notes, rings out. Normally forages in pairs and occasionally accompanies mixed-species flocks.

Rufous-naped Bellbird
Aleadryas rufinucha
A medium-sized, plump bird of mid-montane forest understory. Distinctively patterned with an olive body, yellow throat, black moustache, white chest and gray face with rufous at the back of the head. Note the pale, beady eye. Some areas have a white forehead. Unique adult coloration with no similar species. Juvenile is olive above and rufous below. Voice, various piping notes, including a flat note repeated quickly like Piping Bellbird, or an upslurred one. Also rasping notes.

Elf Owl
Micrathene whitneyi
One of the smallest owls in the world, about the size of a sparrow. Patterned with rufous, gray, and white. Most similar in plumage to Flammulated Owl, but note the Elf Owl's white eyebrows, yellow eyes, tiny size, and habitat. Found in brushy woodlands and surrounding desert, where they nest in natural cavities or abandoned woodpecker holes in trees and cacti. Nocturnal; most easily found by listening for call around dusk: a descending whiny chuckle or single mewing note. Migrates south to Mexico for the winter.
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