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Chestnut Weaver Ploceus rubiginosusIUCN: Least concern Discovery: 044
IntroductionThe Chestnut Weaver was formally described by Wilhelm Peter Eduard Simon Rüppell, a German naturalist and explorer, especially in north-east Africa. Rüppell was the first naturalist to travel through Ethiopia and many birds are named after him.
On Rüppell's third journey to Africa, in 1831-34, he travelled to the Sinai Peninsula, Egypt, and along the coast of the Red Sea to Massawa (Steinheimer 2005). Rüppell stayed in this area a few months at the end of 1831 and into early 1832, and then travelled inland with a trade caravan to reach the Abyssinian Highlands in 1833. He found the Chestnut Weaver at only one locality on his travels. The weavers were in small family parties at high altitude and he collected a male, female and young bird.
The first illustration of a Chestnut Weaver is a colour painting in Ruppell 1840. The next illustration is by Reichenbach (1863), also of an adult male.
Scientific citationPloceus rubiginosus Ruppell 1840 Neue Wirbelt., Vogel, p.93, 100; pl. 33, fig. 1; Temben province, northern Abyssinia.
Meaning of namesrubiginosus - Latin: rusty, ferruginous.
First English nameThe rufous Weawer (Reichenbach 1863).
Alternate namesAngola Chestnut Weaver, Chocolate Weaver, The rufous Weawer.
Locality collectedTemben province, northern Ethiopia.
Type specimensOne specimen is known to be in the British Museum (Vell. Cat. XX:239 a) (Sharpe 1890) - this specimen was aquired from the Senckenberg Museum in Frankfurt in 1834. Senckenberg Museum has two additional syntypes, a male and a female (SMF 12645, 69062).
The above is based on Weaver Wednesday 2, a weekly series about the discovery of each weaver species.
This species text first appeared as Weaver Wednesday  - Discovery : Chestnut Weaver on 2015-07-15
1. Basic biology
Identification. The Chestnut Weaver is named after its colour. The adult male (photo above left) in breeding plumage is a distinctive chestnut with a black head. There are 2 other chestnut coloured birds in Africa. The Cinnamon Weaver (see photo here) is similar but has yellow wing edges (rather than pale) and yellow vent (rather than brown as in the Chestnut Weaver). The Chestnut Sparrow Passer eminibey has chestnut wing edges and is smaller than the Chestnut Weaver. Female (photo above right) and non-breeding male Chestnut Weavers are much browner than other weavers, with buff or chestnut breast-band and flanks, and in southern Africa the grey bill is distinctive. Juveniles are similar but with streaked breasts (see photo here).
Two subspecies of the Chestnut Weaver are currently recognised (see map left, based on Birds of Africa):
There are vagrant records from southern Namibia and South Africa - see here) for a map and links to pdfs describing these records.
Habitat. Chestnut Weavers inhabit dry thornveld.
Food. The Chestnut Weaver feeds on grass seeds and also on insects. In East Africa it feeds mainly on wild grass seeds but switches to cereal crops (especially sorghum) in Feb-Apr, and thus being a pest. Non-breeding birds flock and roost with other granivores and may form large mixed roosts.
Breeding. This species is monogamous and polygynous and highly colonial, with 500 or more nests covering trees in a small area (photo below left, from phown 3739). For example, following exceptional rains in Namibia, over 100 trees had 40-100 nests in each.
Colonies are established at different sites every year, although sometimes the same sites are used again in Namibia. Breeding is fairly well-synchronized within a colony. Males are present during the nest-building phase, displaying with beating wings from their nests. Males leave the colony during the breeding cycle, often while the females are incubating. The males form nomadic flocks and start moult, leaving colonies occupied only by females and young birds.
The nest is built by the male of grass stems (photo right, from phown 2476). The nest is retort-shaped with a short spout (sometimes absent). Nests are usually suspended from the tip of branches, sometimes 3-4 nests hang in a string below one another or are clustered together. Nests look untidy, having protruding grass stems. The nest ceiling and floor are lined with grass heads. Females do all the incubation and feeding of young, since the males leave the colony early.
Red-headed Finches and other species often nest in old nests, and Red-headed Finches also take over active nests.
The above is based on Weaver Wednesday, a weekly series about weaver species.
This species text first appeared as Weaver Wednesday : Chestnut Weaver on 2012-12-12
2. Breeding facts
monogamous and polygynous
Oct in Ethiopia, May in Somalia, May-Jul in Uganda, Apr-Jul (also Nov in N arid region) in Kenya, Mar-Apr in Tanzania, Apr in Angola and Dec-May (mainly Jan-Mar) in Namibia
generally suspended from tip of branch by cord of grass stems, sometimes several nests suspended one below another, 3-5 m above ground in large tree in open grassland, usually baobab (Adansonia) in Kenya and acacia (Acacia), Albizia or Colophospermum in Namibia
tightly woven inside by male, lined with grass seedheads by female
highly colonial, e.g. more than 100 trees each held 40-100 nests at site in Namibia
average 3 eggs (Namibia)
pale turquoise-blue, sometimes speckled or scrolled with dark green
average size of 20 eggs 22.8 x 15.7 mm (Namibia)
incubation by female, period 11-14 days, hatching staggered, suggesting that incubation starts when first egg laid
Chicks and nestling period
chicks fed by female only, as males have already left colony, nestling period 13-16 days
Breeding information based on Handbook of the Birds of the World, Vol. 15.
3. Photos of Weaver Nests
Thumb-nails of most recent PHOWN records - click on one to see its full record
See all PHOWN records for this species here.
4. Breeding distribution
Google map showing distribution (For species with small ranges you need to zoom in at the correct area to see the range):
yellow blob - range of weaver species; read more about this here.
- PHOWN records with photos
- PHOWN records with no photos (Nest Record Cards, other records)
- Birdpix records
- comments on out of range records, or interesting records
- type locality
CLICK on the marker on the map to see individual record details.
5. Range changesStill coming
The above is based on Weaver Wednesday 3, a weekly series about range changes in South African weaver species.
This species text first appeared as Still coming