Black-crowned Tchagra
Tchagra senegalus
The black-crowned tchagra is a colourful and unmistakable species, 19–22 cm in length. It has a black crown and eye stripes separated by a broad white supercilium. The underparts are pale grey and the upperparts pale brown. The folded wings are chestnut and the tail is black, tipped white. The bill is black. Sexes are similar, but young birds have a brown cap and a pale yellow bill. There are 14 subspecies, varying in size and the colour of the back, underparts and eyestripe.
ID text from Wikipedia, CC BY-SA 4.0

Southern Tchagra
Tchagra tchagra
The southern tchagra is 17–21 cm in length. It has a brown crown and black eye stripes separated by a broad white supercilium. The underparts are pale grey and the upperparts pale brown. The folded wings are chestnut and the tail is black, tipped white. The longish bill is black. The sexes are similar, but young birds are duller and have a buff stripe through the eye. This species is similar to the black-crowned tchagra, but that species is larger, and the adult, as its name implies, has a black rather than brown crown.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Black-crowned Tchagra and Southern Tchagra.