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
Red-backed Flameback
Dinopium psarodes
Widespread, medium-sized woodpecker with a bright red back and three toes. Endemic to Sri Lanka. Associated with home gardens, plantations, and most wooded habitats except for dense tropical forest. Separated from all other flamebacks except Black-rumped by dark throat, lack of a contrasting black horizontal stripe below the cheek, and its distinctive call. Separated from Black-rumped by its spectacular red back. Male has a complete red cap while the female has a black and white spotted forehead. Often detected by its loud “ki-ki-ki-ki-ki,” which steadily increases in pace and ends in a trill.
Southern Citril
Crithagra hyposticta
Small seedeater with a sharp bill and forked tail. The upperparts are olive-green and the underparts pale yellow with some streaking. Males and females are similar. Found at middle and high elevations in a variety of habitats, including forest edge, gardens, cultivation, moist scrub, and woodland. Usually in small flocks. The song is a fast jumble of high-pitched twitters and whistles. Similar to Western Citril, but there is virtually no overlap in range, and further separated by the lack of a strong pale eyebrow, and the lack of a black face on the male.
Mekong Wagtail
Motacilla samveasnae
Large black-and-white wagtail with an intricately and uniquely striped head pattern. Wings and outer tail feathers flash brightly in flight. Adult male is black-backed, while the female and immature have a duller gray-brown back. Simple song is a compilation of a few high phrases of whistles and twitters. Call is harsh and buzzy. Found only around flowing lowland rivers with braided rocky sections, specifically a unique composite of gravel and sand bars with low vegetation and boulders.
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