Rufous-bellied Helmetshrike
Prionops rufiventris
A boldly patterned helmetshrike of lowland forests, often seen in small vocal groups. The bill is red and the head and chin are overall silvery gray. Has a black neck band and black wings, back, and tail. The chest is white and the belly, vent, and legs are reddish. Similar to the Red-billed Helmetshrike, with which it co-occurs locally in Cameroon, but Rufous-bellied Helmetshrike can be identified by its silvery gray chin and head (including below the eye) and the more extensive reddish coloration on its belly. Calls consist of liquid whistles and repeated grating “chew-two” calls.
识别特征
It is 20–22 cm long. The adult has glossy black upperparts and throat and reddish-brown underparts with a narrow white breastband. The top and sides of the head and the chin are pale blue-grey and there are bushy whitish feathers on the forehead. The wings are broad and rounded with a white band across the primaries. The bill, legs and feet are orange-red and the eye is yellow with a bare orange-red ring around it. The eastern subspecies P. r. mentalis has darker underparts and a grey-brown eye. Juvenile birds are duller than the adults and have a pale buff-white breast and belly and a largely whitish head. The bill is blackish and the legs and feet are dark orange.<p>It is a noisy bird with a variety of complex chattering and whistling calls. Birds often call together in a duet or chorus. They also make bill-snapping sounds and the wings produce a sound during flight.
分类信息
- 学名
- Prionops rufiventris
- 命名信息
- (Bonaparte, 1853)
- 目
- Passeriformes
- 科
- Vangidae
- 属
- Prionops
分布与栖息地
The western subspecies P. r. rufiventris is found in southern Cameroon, mainland Equatorial Guinea, south-west Central African Republic, northern and western Gabon, Cabinda and parts of the Republic of Congo and north-western Democratic Republic of Congo. P. r. mentalis occurs in central and eastern Democratic Republic of Congo and western Uganda and formerly occurred in Rwanda.<p>The species is found mainly in lowland forest up to 1,450 m above sea-level. It occurs in primary and mature secondary forest and in gallery forest along rivers. It is locally common and does not appear to be threatened.
- 迁徙
- Resident species
行为
Its behaviour has been little-studied. It typically feeds in pairs or small groups and often joins mixed-species feeding flocks. It most often forages around the middle level of trees at 10–30 m above the ground. It makes short flights to catch prey or gleans items from small branches. The diet consists of insects and other arthropods. The bird appears to breed in groups with one dominant pair helped by the others.
保护状况
- 种群趋势
- declining
照片
分布
其他鸟类
Olive Thrush
Turdus olivaceus
A typical thrush with olive-brown upperparts and rufous underparts. Its taxonomic status remains under review, and it is most easily identified by range. In the north it is primarily a species of montane forest and forest edge, but farther south it occurs in gardens, woodland, plantations, and heath. It has a varied song, and often reveals its presence with typical thrush “chk-chk” or thin “tseeep” calls. An understory specialist that sometimes skulks, but at other times can be quite bold. Most similar thrushes do not overlap geographically. One that does is the Karoo Thrush, which differs from Olive Thrush in its gray (not rufous) flanks; its yellow-orange (not brown) eye-ring; its yellow (not dark brown) base to the upper mandible of the bill; and its less streaky throat.
Melanesian Kingfisher
Todiramphus tristrami
A Collared-type kingfisher found on a broad band of islands northeast of New Guinea, ranging from the Bismarck Archipelago east to Guadalcanal in the Solomons. Varies across range; note blue-green upperparts, pale collar, slender dark mask, and bicolored bill. Compare with Sacred Kingfisher; Melanesian averages darker and bluer above. Inhabits a range of island habitats, often in coastal regions but also well inland, especially in areas without other kingfishers. Listen for loud, harsh, far-carrying calls.
Leaden Antwren
Myrmotherula assimilis
Small, short-tailed antwren. Males are gray with white wingbars. Females are gray-brown above and buff below, with buffy wingbars. Found in the understory of flooded forests and on river islands. The song is a fast trill that descends at the end. The similar Gray Antwren lacks this species’ semi-concealed white patch on the back and has a different song and habitat preference.
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