Alophius erythrorhynchus The northern red-billed hornbill (Tockus erythrorhynchus) is a species of hornbill in the family Bucerotidae.

It is found from southern Mauritania through Somalia and northeast Tanzania.

There are five species of red-billed hornbills recognized, but all five were once considered conspecific and some authorities still classify the others as subspecies of Tockus erythrorhynchus.

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