Black Bishop
Euplectes gierowii
A large bishop in which breeding males are scarlet and black, and females and non-breeding males are brown and streaky. There is geographic variation in the amount of red on the back of males, although the rump is always black. Found in lush grassland, cultivated areas, and savanna. Breeding male similar to Black-winged Bishop, but separated by larger size, black rump, and black crown. Females and non-breeding males can be confused with a variety of other bishops and widowbirds, but can be tentatively identified by their very dark overall coloration, heavily streaked back and breast, and large size. The song is a series of dry buzzy notes.
识别特征
At 14 to 16 cm (5.5–6.3 in), the black bishop is large for its genus. The breeding male is black on the wings, tail, chest, cheeks and forehead. The neck, back of the head and breast band) are orange or orange-red. The under tail-coverts are pale buff with black streaks, and the upper back is yellow or orange-yellow in subspecies ansorgei, and orange in friederichseni. The throat is scarlet in the nominate subspecies and black in ansorgei. The subspecies friederichseni has the undertail coverts isabelline. The upper back is golden yellow and the rump is brown. The conical bill, characteristic of finches, is black and the tarsus is brown. Females are dark, including the sides of the face, have boldly spotted under tail-coverts, and dark spots on a buff breast. The female's wing linings are black. The non-breeding male is black on the back, wings and rump, with yellowish supercilia and chin; the sides of face and breast are tawny buff. The juvenile resembles the female but has smaller breast spots. The calls comprise various subdued twittering sounds, including see-zee see-zee see-zhe see-zhe SEE-ZHEE, zee-zee-zeezee-zee, and hishaah, hishaah, SHAAAAAAH, tsee-tseet-tseet-tseet.
分类信息
The black bishop was first described by the German ornithologist Jean Cabanis in 1880 and named after H. Gierow, a Swedish explorer and collector in Angola. It is sometimes placed with E. aureus and E. hordeaceus in a separate genus, Groteiplectes.<p>A study of the molecular phylogeny of bishops and widowbirds published in 2008 found that it formed part of a clade along with the fire-fronted bishop (E. diadematus), black-winged red bishop (E. hordeaceus), northern red bishop (E. franciscanus), southern red bishop (E. orix), Zanzibar red bishop (E. nigroventris) and red-collared widowbird (E. ardens). An alternate common name is Gierow's bishop.<p>Three subspecies of the black bishop are now recognized.
- 学名
- Euplectes gierowii
- 命名信息
- Cabanis, 1880
- 目
- Passeriformes
- 科
- Ploceidae
- 属
- Euplectes
分布与栖息地
The black bishop is native to Angola, Cameroon, Central African Republic, Republic of the Congo, Democratic Republic of the Congo, Ethiopia, Kenya, South Sudan, Tanzania, and Uganda. Its preferred habitats are grasslands, shrublands, and wetlands.
- 迁徙
- Resident species
行为
Migration pattern: Resident species.
保护状况
Population trend: stable.
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Ladder-tailed Nightjar
Hydropsalis climacocerca
Large nightjar of tropical lowlands, often found near waterways. Sandy brown with indistinct light markings and a fairly long tail; in flight, males show large white wedges on outer tail feathers. Roosts during the day in vegetation along the edges of oxbow lakes and rivers and forages around sandbars and river edges at night. Does not call often, but occasionally gives soft chirping calls in flight.
Barusan Cuckoo-Dove
Macropygia modiglianii
Endemic to the Barusan Islands, off Sumatra’s northwest coast. Dark gingery brown overall, with a slightly lighter head. The only cuckoo-dove on the Barusans, except for Simeulue, where Little Cuckoo-Dove also occurs; note Barusan’s larger size and darker rust-brown chest. Inhabits forested areas in the lowlands and foothills of the Barusans. Similar in habits to other cuckoo-doves: shy and sluggish, typically foraging singly in the middle and lower levels of forest. Gives a three-part series of cooing hoots, “woo-woo-wooOOH”; may sound like just one rising hoot at a distance.
Pere David's Laughingthrush
Pterorhinus davidi
A plain clay-brown laughingthrush with a long, curved yellow bill. Largely without distinguishing plumage features, but note weak white brow, blue-gray tinge to the wings, and small black patches on the “elbow” and face. The only laughingthrush in much of its range. Forages in hilly and montane regions, where it often moves about noisily in medium-sized flocks in scrubby, brushy habitat, often near waterways. Long rambling song melodious and thrush-like; calls include fluid whistles, nasal chattering, and quiet peeping.
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