Data Zone
| Scientific name | Common name | Family | Red List category |
|---|---|---|---|
| Horizocerus albocristatus | Western Long-tailed Hornbill | Bucerotidae (Hornbills) | LC |
| Horizocerus granti | Eastern Dwarf Hornbill | Bucerotidae (Hornbills) | LC |
| Horizocerus cassini | Eastern Long-tailed Hornbill | Bucerotidae (Hornbills) | LC |
| Horizocerus hartlaubi | Western Dwarf Hornbill | Bucerotidae (Hornbills) | LC |