Northern red-billed hornbill explained

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.^[1]

References

• Kemp, A.C. and W. Delport. 2002. Comments on the status of subspecies in the red-billed hornbill (Tockus erythrorhynchus) complex (Aves: Bucerotidae), with the description of a new taxon endemic to Tanzania. Annals of the Transvaal Museum 39: 1–8.
• Delport, W., A.C. Kemp, and J.W.H. Ferguson. 2004. Structure of an African Red-billed Hornbill (Tockus erythrorhynchus rufirostris and T. e. damarensis) hybrid zone as revealed by morphology, behavior, and breeding biology. Auk 121: 565–586.

External links

• (Southern) Red-billed hornbill – Species text in The Atlas of Southern African Birds.

Notes and References

1. Web site: Red-billed Hornbill . . www.hbw.com. Handbook of Birds of the World online. 12 May 2018.