The tropical boubou or bell shrike is a medium-sized passerine bird of sub-Saharan Africa. This very diverse "species" with its numerous subspecies and morphs has since long posed a taxonomic problem,

The slate-colored boubou or slate-coloured boubou is a species of bird in the family Malaconotidae. It is found in Ethiopia, Kenya, Rwanda, Somalia, South Sudan, Tanzania, and Uganda. Its natural habi