| Tockus nasutus | Calao à bec noir | African Gray Hornbill |
| Tockus erythrorhynchus | Calao à bec rouge | Northern Red-billed Hornbill |
| Tockus leucomelas | Calao leucomèle | Southern Yellow-billed Hornbill |
| Bucorvus leadbeateri | Bucorve du Sud | Southern Ground-Hornbill |