The East Coast boubou or Zanzibar boubou (Laniarius sublacteus) is a species of bird in the family Malaconotidae.
It is found from southeast Somalia to northeast Tanzania, and Zanzibar island.
It has vestigial or no white wing stripe. Outer tail feathers may have white tips. Juveniles have no barring on underside. An all-black morph occurs in the area around the lower Jubba and Tana Rivers and on the Lamu Archipelago.
^Nguembock, B.; Fjeldså, J.; Couloux, A.; Pasquet, E. (2008). "Phylogeny of Laniarius: Molecular data reveal L. liberatus synonymous with L. erlangeri and 'plumage coloration' as unreliable morphological characters for defining species and species groups". Molecular Phylogenetics and Evolution. 48 (2): 396–407. doi:10.1016/j.ympev.2008.04.014. PMID18514549.