Black-necked Weaver
Ploceus nigricollis
A medium-sized, dark-eyed weaver in which males and females are distinctly different, but both are colorful. Varies geographically: upperparts are black in the east and brownish-black in central Africa. Found in woodland, thick scrub, moist savanna, gallery forest, and forest clearings and edge. Usually alone or in pairs. Vocalizations are typical of weavers: “chet” notes and a sizzling, “radio static” song. Formerly treated as the same species as Olive-naped Weaver, under the name “Black-necked Weaver.”
识别特征
The black-necked weaver is a stocky 16 cm bird with a strong conical bill. The adult male of the northern race has olive upper-parts and wings, and yellow underparts and head. It has a black eye-mask and bib, and a pale yellow iris. The non-breeding male has a yellow head with an olive crown, grey upper-parts and whitish. The wings remain yellow and black.<p>The adult female also has olive upper-parts and wings, and yellow underparts and head. It has a black eyemask but no bib.<p>The southern race found from Nigeria eastwards has a quite different appearance, with almost black upper-parts and tail.<p>The black-necked weaver feeds on insects and vegetable matter. The calls of this bird include a wheezing dew-dew-twee .
分类信息
The species was formally described in 1805 by the French ornithologist Louis Pierre Vieillot, who named it Malimbus nigricollis. The description was based on a specimen that had been collected near Malimbe, now Malembo, in the Cabinda Province of Angola. The species epithet nigricollis combines the Latin words Latin words, niger meaning "black" and collis meaning "necked".<p>There are two subspecies recognized:<p>The black-necked weaver was formerly considered to be conspecific with the olive-naped weaver. The two species differ in plumage and in the colour of the iris. A molecular study published in 2019 found that the two species are genetically very similar.
- 学名
- Ploceus nigricollis
- 命名信息
- (Vieillot, 1805)
- 目
- Passeriformes
- 科
- Ploceidae
- 属
- Ploceus
分布与栖息地
This weaver occurs in forests, especially in wet habitats.
- 迁徙
- Resident species
行为
It builds a large coarsely woven nest made of grass and creepers with a 15 cm downward facing entrance tunnel hanging from the globular egg chamber. The nest is suspended from a branch in a tree and 2-3 eggs are laid. It nests in pairs but forms small flocks when not breeding.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Polynesian Ground Dove
Pampusana erythroptera
A rotund, short-legged ground-dwelling dove that usually runs rather than flies when startled. Male is unmistakable, dark-bodied with a purplish iridescent shoulder, a bright white chest and face, and a blackish crown patch that extends to the neck. Female similar but has a beige belly, chest, and head with a dark spot behind the eye. Apparently rarely vocal, but has been heard giving a typical dove-like “coo.”
White-fronted Honeyeater
Purnella albifrons
Small nomadic honeyeater of the outback, fairly common across arid parts of inland Australia. Mottled gray and brown above, pale with dark streaks below, with bold white forehead, white moustache, black throat and upper chest, and yellow in primary feathers. Calls include a variety of pulsating electrical sounds and rapidly repeated sharp notes.
Golden Tanager
Tangara arthus
Small tanager found in Andean foothills and subtropical zone from Venezuela to Bolivia. Mostly bright golden-yellow with isolated black ear patch, streaked back, and mostly black wings and tail. Some variation among populations, with northernmost birds showing a chestnut breast band and flanks. Sexes alike; young birds duller yellow. One of the most common tanagers in mixed flocks from around 900–2,200 m, in cloud forest, edges, and gardens.
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