Cape Weaver
Ploceus capensis
A large weaver with a long, thin pointed bill. The male has a pale eye, and during the breeding season a brownish wash to the face. The female has a brown eye and an olive-brown belly. The species occupies open country, where it often breeds in mixed-species colonies over water or in large isolated trees. The chattering and rasping song is long and complex. The smaller Southern Brown-throated Weaver has a chunkier bill than Cape Weaver; its male has a better defined brown throat and its female has a white belly. African Golden-Weaver has reddish eyes, and Holub’s Golden-Weaver has an unstreaked yellowish back.
Identification
The Cape weaver is a stocky 17 cm long bird with streaked olive-brown upperparts and a long pointed conical bill. The breeding male has a yellow head and underparts, an orange face, and a white iris. The adult female has an olive-yellow head and breast, shading to pale yellow on the lower belly. The female's eyes are brown, but 19% have pale eyes in summer and thus eye colour alone cannot be used to determine the sex. Young birds are similar to the female.<p>The song of the Cape weaver is a harsh, rather hysterical sizzle. The alarm call is a sharp double chip and the contact call is a harsh "azwit".
Taxonomy
In 1760 the French zoologist Mathurin Jacques Brisson included a description of the Cape weaver in his Ornithologie based on a specimen collected from the Cape of Good Hope. He used the French name Le carouge du Cap de Bonne Espérance and the Latin Xanthornus Capitis Bonae Spei. Although Brisson coined Latin names, these do not conform to the binomial system and are not recognised by the International Commission on Zoological Nomenclature. When in 1766 the Swedish naturalist Carl Linnaeus updated his Systema Naturae for the twelfth edition, he added 240 species that had been previously described by Brisson. One of these was the Cape weaver. Linnaeus included a brief description, coined the binomial name Oriolus capensis and cited Brisson's work. The specific name capensis denotes the Cape of Good Hope. This species is now placed in the genus Ploceus that was erected by the French naturalist Georges Cuvier in 1816. The species is monotypic.
- Scientific name
- Ploceus capensis
- Authority
- (Linnaeus, 1766)
- Order
- Passeriformes
- Family
- Ploceidae
- Genus
- Ploceus
Range and habitat
The Cape weaver is endemic to South Africa, Lesotho and Eswatini, occurring across much of the area excluding the Kalahari Desert from the Orange River in the Northern Cape south to the Cape of Good Hope then east to northern KwaZulu Natal and inland almost to Bloemfontein in the Free State.<p>The Cape weaver occurs in open grassland, lowland fynbos, coastal thicket and farmland, so long as there is permanent water and trees. In the more arid, hotter regions it is restricted to upland areas and it never occurs in forest.
- Migration
- Resident species
Behavior
When not breeding the Cape Weaver forms flocks, and it congregates in large roosts throughout the year, these may be shared with other birds, including other species of weavers. In some areas they desert the breeding colonies, returning at the commencement of the following breeding season. Anting has been observed and these birds bathe, even in rain or mist.<p>The Cape weaver is a polygynous, territorial colonial nester, each male may have up to 7 females in a single breeding season. The males normally form colonies of between 2 and 20 males. Each male builds multiple nests within a small territory, which he vigorously defends against other males. Females test the quality of the construction of the nest by pulling at material on the interior; if it is acceptable the female adopts a hunched posture to indicate her readiness to mate. The nest is built by the male in about a week, and is a kidney-shaped, fully waterproof construction made of broad strips of grass or reeds that are woven together. Once a female accepts the nest the male builds an entrance tunnel at its base, while she lines the inside of the nest with fine grass and feathers. The nest is usually attached to the tip of a tree branch, often exotic species such as eucalyptus or willow or it is built in tall wetland vegetation such as reeds Phragmites or reedmace Typha capensis, on utility lines or on fences overlooking water.<p>It lays a clutch of 2-5 eggs. Eggs are laid in June–February with a peak in October to January in summer rainfall areas and August–October in the winter rainfall zone of the Western Cape. The eggs are incubated by the female for about two weeks. After they hatch, she broods for the first few nights, after which she roosts in an adjacent unused nest. At first, the chicks are fed by the females, but when they are older the males take up a greater role in providing food. The young fledge at about 17 days old.<p>The Cape weaver is subjected to brood parasitism by the diederik cuckoo. The nests are sometimes heavily infested with parasites such as mites, and the fledglings can be parasitised by ticks. Disused nests may be reused by Cape sparrows and African dusky flycatchers.<p>The Cape weaver is omnivorous with a diet that is evenly divided between animal and plant matter, particularly seeds, fruit and nectar. It forages in a variety of ways on the ground, in tree foliage, gleaning food from bark and hawking insects in the air. Its relatively long bill is adapted to feeding on a wide variety of food items and there is a long list of items that this species has been recorded as eating, including various insects, spiders, seeds, nectar, and fruit. The females appear to enjoy a more varied diet than the males. Cape weavers are generalist nectar-feeders and in South Africa they are the major pollinators of aloes.
Conservation
- Population trend
- stable
Photos
Distribution
Bird Calls
Other Birds
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Pied Butcherbird
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Medium-sized ambush-hunter with a long gray bill with a dark, hooked tip. Adult has black head, upper breast, back, and tail that contrast starkly with white nape, breast, belly, and wing pattern. Immature similarly patterned in brown instead of black. More likely than Gray Butcherbird to perch atop trees and poles. Beautiful fluting, whistling song, sometimes heard at night.
Sangkar White-eye
Zosterops melanurus
Typical-looking white-eye, with bright yellowish upperparts and bright white “spectacles.” Recently split from Oriental White-eye, to which it may still be referred to as in older literature. Throughout most of its range, this species has a yellow belly, but birds in the far western corner of Java have gray bellies. The only “classic white-eye” throughout much of its range; in areas of overlap with other species, Sangkar’s combination of dark eyes and a prominent dark stripe between the eye and bill base serve to identify it. Found in lowland and foothill forests, forest edges, gardens, and plantations. Calls include bright, descending “deee, deee.” Song is jumbled and high-pitched, and has made this species a sought-after target in the cagebird trade; as such, it is now uncommon or rare in certain areas of otherwise suitable habitat.
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