Genus: Horizocerus
| Taxon | Value |
|---|---|
| Order | Hornbills and relatives / Bucerotiformes |
| Family | Hornbills / Bucerotidae |
Number of displayed species: 4
- Horizocerus 4
- Western Long-tailed Hornbill / Horizocerus albocristatus Western Long-tailed HornbillLC
- Eastern Long-tailed Hornbill / Horizocerus cassini Eastern Long-tailed HornbillLC
- Eastern Dwarf Hornbill / Horizocerus granti Eastern Dwarf HornbillLC
- Western Dwarf Hornbill / Horizocerus hartlaubi Western Dwarf HornbillLC
How many species of birds are there in Horizocerus
4 species
2 subspecies