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 [218] – Discovery [101]: Weyns’s Weaver on 2016-08-17
1. Basic biology
Weyns’s Weaver male and female, figure from Dubois 1905
Identification. The Weyns’s Weaver male has a black head, back and breast and pale eye. It is similar to Vieillot’s Black Weaver, but the rest of the underparts are chestnut and yellow, and the wings have a yellow wing-bar and feather edgings.The female has plain olive-green upperparts and face, with a pale eye but no supercilium. The female is separated from very similar female Vieillot’s Black Weaver by a blackish bill, green tail and yellow underwings.
Distribution. The Weyns’s Weaver is found in eastern PRCongo, western and northern DRCongo, southern Uganda and NW Tanzania (see map above, based on Birds of Africa). There are no subspecies of the Weyns’s Weaver.
Habitat. The Weyns’s Weaver lives high up in tall forest trees in seasonally dry swamp forest, and also in lush lake shore vegetation. It is restless, with a fast flight. It is usually resident, but may wander erratically, and seems to be absent from the northern shores of Lake Victoria in June-Sept.
Food. The Weyns’s Weaver feeds on fruit, including wild figs, and most likely is also insectivorous. It forages in pairs and in flocks, mainly in the forest canopy. Feeding flocks are about 20 individuals, and sometimes up to 200 or more. It roosts in flocks, sometimes with other weavers.
Breeding. There is very limited information on the breeding biology of the Weyns’s Weaver. There is one record of breeding in a papyrus swamp in Mabamba Bay, Uganda, in February 2006. This resembles the breeding pattern of Clarke’s Weaver, of breeding in reeds but otherwise living in forests.
One photo of the nest of a Weyns’s Weaver, however, is in a tree in Bwindi Impenetrable National Park, Uganda (see here), although the species needs to be confirmed.
The above is based on Weaver Wednesday, a weekly series about weaver species.
This species text first appeared as Weaver Wednesday [89]: Weyns’s Weaver on 2014-02-26
2. Breeding facts
Pair bond
no information
Breeding season
Young found in Uganda in Nov, and begging juvenile seen Apr; adults with enlarged gonads in Apr-Jun in DRCongo and Jun-Jul in Uganda
Nest site
no information
Nest building
no information
Colony size
no information
Clutch size
no information
Egg colour
no information
Egg size
no information
Incubation
no information
Chicks and nestling period
no information
Breeding information based on Handbook of the Birds of the World, Vol. 15.