Vieillot's Black Weaver vs Chestnut Weaver

In short

Vieillot's Black Weaver and Chestnut Weaver can be distinguished by plumage and habitat preferences. Vieillot's Black Weaver is predominantly black, while the Chestnut Weaver males in breeding plumage are chestnut with a black head. Habitat differences also aid in identification, with Vieillot's Black Weaver favoring wetter areas compared to the drier regions preferred by Chestnut Weaver.

Identification tips

• Look for plumage color: Vieillot's Black Weaver is black, while Chestnut Weaver males are chestnut with a black head during breeding.
• Habitat: Vieillot's Black Weaver prefers wetter areas; Chestnut Weaver is found in drier, thornveld regions.
• Colony size: Chestnut Weaver often forms larger colonies, especially after rains.

Size

Both species are similar in size, typical of weavers, making size a less reliable distinguishing feature.

Plumage

Vieillot's Black Weaver is mostly black, whereas the Chestnut Weaver male in breeding plumage is chestnut with a black head. Female and nonbreeding Chestnut Weavers are browner with a buff or chestnut breast band and flanks.

Behaviour

Both species exhibit colonial nesting behavior, but the Chestnut Weaver is highly colonial with large colonies, especially after rains.

Habitat

Vieillot's Black Weaver is often found in wetter environments, while the Chestnut Weaver inhabits dry thornveld and semiarid regions.