Order : Bucerotiformes
4 families, 19 genus and 75 species.
| Families | Nb genus | Nb species | Genus |
|---|---|---|---|
| Upupidae | 1 | 4 | Hoopoes |
| Phoeniculidae | 2 | 9 | Woodhoopoes |
| Bucorvidae | 1 | 2 | Ground-Hornbills |
| Bucerotidae | 15 | 60 | Hornbills |
Sources : Gill, F and D Donsker (Eds). 2023. IOC World Bird List (v13.2) doi : 10.14344/IOC.ML.13.2.
Avibase (ioc v13.2), the world bird database - Lepage, D. 2023. © 1996-2023 Oiseaux.net
- Accipitriformes
- Aegotheliformes
- Anseriformes
- Apodiformes
- Apterygiformes
- Bucerotiformes
- Caprimulgiformes
- Cariamiformes
- Casuariiformes
- Charadriiformes
- Ciconiiformes
- Coliiformes
- Columbiformes
- Coraciiformes
- Cuculiformes
- Eurypygiformes
- Falconiformes
- Galliformes
- Gaviiformes
- Gruiformes
- Leptosomiformes
- Mesitornithiformes
- Musophagiformes
- Nyctibiiformes
- Opisthocomiformes
- Otidiformes
- Passeriformes
- Pelecaniformes
- Phaethontiformes
- Phoenicopteriformes
- Piciformes
- Podargiformes
- Podicipediformes
- Procellariiformes
- Psittaciformes
- Pterocliformes
- Rheiformes
- Sphenisciformes
- Steatornithiformes
- Strigiformes
- Struthioniformes
- Suliformes
- Tinamiformes
- Trogoniformes