The five species of small red-billed hornbills are found in savanna and woodland of sub-Saharan Africa – northern red-billed hornbill (Tockus erythrorhynchus), western red-billed hornbill (Tockus kempi), Tanzanian red-billed hornbill (Tockus ruahae), southern red-billed hornbill (Tockus rufirostris) and Damara red-billed hornbill (Tockus damarensis). They all have mainly whitish underparts and head, grey upperparts, long tails, and a long and curved red bill which lacks a casque. The sexes are similar, but the female has a smaller bill.
