The black-headed waxbill (Estrilda nigriceps) is a small passerine bird belonging to the family Estrildidae, which comprises the estrildid finches commonly referred to as waxbills. It is native to sub‑Saharan Africa.
Taxonomy
- Kingdom: Animalia
- Phylum: Chordata
- Class: Aves
- Order: Passeriformes
- Family: Estrildidae
- Genus: Estrilda
- Species: E. nigriceps
- Authority: (Sclater, 1883)
Description
The black-headed waxbill measures approximately 10–12 cm (4–4.7 in) in length. As its common name implies, the head is uniformly black, contrasting with brownish‑grey upperparts and a pale, buff‑coloured underbelly. The conical bill is short and stout, adapted for seed consumption. Both sexes are similar in plumage, and juveniles lack the fully black head, showing a more mottled appearance.
Distribution and Habitat
Estrilda nigriceps occurs in central and eastern Africa. Verified records include the Democratic Republic of the Congo, Angola, Zambia, Tanzania, and parts of Kenya. The species inhabits open woodland, savanna, and edges of cultivated fields, favouring areas with abundant grass seeds and scattered shrubs that provide perches and nesting sites.
Behaviour and Ecology
- Diet: Primarily granivorous, feeding on seeds of grasses and various herbaceous plants; occasional ingestion of insects has been noted during the breeding season.
- Breeding: The black-headed waxbill is monogamous, forming small, loose colonies. Nesting involves constructing a domed grass nest with an entrance near the apex, usually placed low in vegetation. Clutch size typically consists of 3–5 eggs, which are incubated by both parents.
- Vocalisations: Calls are high‑pitched chirps and trills used for pair communication and flock cohesion.
Conservation Status
The International Union for Conservation of Nature (IUCN) classifies the black-headed waxbill as Least Concern. The species has a relatively wide distribution and is considered to have a stable population trend. No major widespread threats have been identified, although local habitat alteration through agricultural expansion may affect some populations.
References
- BirdLife International species factsheet, Estrilda nigricans (2022).
- International Union for Conservation of Nature (IUCN) Red List entry for Estrilda nigricans (2021).
- Fry, C. H., Keith, S., & Urban, E. K. (2004). The Birds of Africa, Volume III. Academic Press.