Black-backed Puffback

They measure about 17 cm in length, and the sexes are similar though easily distinguishable. Adult males have the upperparts deep blue-black with a slight luster. The black cap subtends the red eye, the upperpart plumage is black-and-white, and the underparts pure white. Females have a black loral stripe and white supraloral feathering, with the ear coverts pale and the crown not solidly black. They also have greyer backs than males, and grey to buffy tones to the white plumage tracts. Immature birds resemble females, but have brownish bills and brown irides, while the upperparts and flanks are still greyer, and the underparts and edges of the wing feathers are yet more buffy. Intraspecific variation is clinal. Range, iris colour, wing markings and the female plumage assist in separating it from other puffback species.