Common Waxbill

The Common Waxbill, known scientifically as Estrilda astrild and colloquially as the St Helena Waxbill, is a diminutive passerine bird of the estrildid finch family. This species is adorned with a bright red bill reminiscent of sealing wax, which is the origin of its name. The adult Common Waxbill measures approximately 4 to 5 inches in length, with a wingspan of 4.5 inches, and weighs between 3/5 to 3/4 ounce. Its plumage is primarily grey-brown, intricately barred with dark brown, and it possesses a distinctive red stripe through the eye. The cheeks and throat are whitish, and the underparts may exhibit a pinkish hue with a reddish stripe along the belly's center, varying by subspecies. The rump is brown, while the tail and vent are dark. Females are similar to males but are paler with less red on the belly. Juveniles are duller with little or no red on the belly, fainter dark barring, and a black bill.

Identification Tips

To distinguish the Common Waxbill from similar species, observe the rump and vent colors. The black-rumped waxbill has a black rump and pale vent, while the crimson-rumped waxbill features a dark bill, red rump, and some red on the wings and tail. The black-lored waxbill, restricted to the Democratic Republic of Congo, has a black stripe through the eye instead of red.

Habitat

Common Waxbills favor open landscapes with long grass and rank vegetation. They are often found near water in marshes and among reeds. These birds are known to be quite tame, venturing into gardens, parks, and farmland.

Distribution

Native range

The Common Waxbill is native to sub-Saharan Africa, with approximately 17 subspecies distributed across East, Central, and Southern Africa, avoiding desert or dense forest regions. In West Africa, they are more localized, with populations centered around Sierra Leone, Liberia, and the Ivory Coast.

Introduced range

The species has been introduced to various regions worldwide, including islands around Africa, parts of Europe, the Americas, and the Pacific. In Europe, it has become widespread in Portugal and is expanding through Spain.

Behaviour

Common Waxbills are gregarious, often foraging in flocks that can number in the hundreds or thousands. They typically feed by clinging to grass stems and picking seeds from flower heads but will also forage for fallen seeds on the ground. Regular drinking is necessary, as their seed diet contains little water.

Song & calls

The Common Waxbill produces a variety of twittering and buzzing calls, along with a distinctive high-pitched flight call. Its simple song is harsh and nasal, descending on the last note.

Breeding

The nest of the Common Waxbill is a large ball of grass stems with a long entrance tube, usually situated low amongst dense vegetation. A second "cock's nest" may be built atop the main nest. They lay four to seven white eggs, incubated for 11 to 13 days, with fledging occurring 17 to 21 days post-hatching. Both parents are involved in incubation and chick feeding. Breeding seasons vary globally, and nests may be parasitized by the pin-tailed whydah.

Diet and Feeding

The Common Waxbill's diet is predominantly grass and millet seeds, with insects consumed occasionally, especially during the breeding season. Guinea grasses, crabgrass, and Echinochloa species are significant dietary components.

Conservation status

The Common Waxbill is classified as Least Concern by the IUCN, indicating a stable global population.