Weyns’s Weaver Ploceus weynsi

Weaver species list / RELATED SPECIES: Baglafecht Weaver / Bannerman’s Weaver / Bertram’s Weaver / Giant Weaver / Orange Weaver / Principe Golden Weaver / Vieillot’s Black Weaver / Weyns’s Weaver

IUCN: Least concern Discovery: 101

Categories: wetland, fruit

Discovery

Weyns’s Weaver male & female figure from Dubois (1905)
Weyns's Weaver
Weyns’s Weaver male figure from Mackworth (1955)
Weyns's Weaver
Weyns’s Weaver female figure from Mackworth (1955)

Weyns’s Weaver distribution, type locality circled

 

Introduction

The Weyns’s Weaver was formally described by Alphonse Joseph Charles Dubois, a Belgian naturalist and curator of the department of vertebrates at the Royal Museum of Natural History in Brussels.The Weyns’s Weaver was collected by Auguste Francois Guillaume Weyns, a Belgian Lieutenant-Colonel and explorer.

Weyns visited Africa four times before retiring in 1900, the first trip being to the village of Banana, Congo in 1888. In 1890 Weyns was appointed to protect the construction of the railway which was to connect Matadi to Stanley Pool. From 1894 to 1897 he again worked to protect the Company Railway in Belgian Congo. Weyns had wide interests and during this time he took many photos (eg published in the French magazine Congo illustre), and collected many specimens (plants, mammals, birds and insects).

In 1898 the Congo Museum was established in Tervuren. Weyns left Antwerp on 11 June 1898 on board the Albertville steamer to attend the opening of the Congo Railroad. He travelled much of the state, as far as the Stanley Falls and visited the lower reaches of several major tributaries of the river. He returned to Belgium on 9 August 1899, contributing many zoological, botanical, anthropological, geological, paleontological specimens and photographs to the Tervuren Museum.

It is most likely on the 1898-1899 trip that Weyns collected the weaver that was later named after him. 11 of the 15 collected specimens of Weyns’s Weaver are still at Tervuren Museum.

The first illustration of the Weyns’s Weaver was of the adult male and female, published by Dubois (1905). The next illustrations were published 50 years later by Mackworth (1955).

Scientific citation

Melanopteryx weynsi Dubois 1900a, Orn. Monatsb. 8: p.69, Bumba, Congo River, northern Belgian Congo.

Meaning of names

weynsi, Named after Lieutenant Colonel A.F.G. Weyns (1854-1944) Belgian explorer and collector in tropical Africa, 1888-1903.

First English name

Weyns’s Black-headed Weaver (Shelley 1905b).

Alternate names

Weyns’s Black-headed Weaver, Weyns’s Yellow-bellied Black Weaver.

Collector

Auguste F G Weyns.

Date collected

Between 1888-1900, probably 1898-1899.

Locality collected

Bumba, Congo River, DR Congo.

Type specimens

11 of the 15 types are in the Tervuren Museum.

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
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.

3. Photos of Weaver Nests


Vm 26363

Thumb-nails of recent PHOWN records