# List of hornbills

Hornbills are birds in the families Bucerotidae and Bucorvidae. There are currently 62 extant species of hornbills recognised by the International Ornithologists' Union, two in Bucorvidae and 60 in Bucerotidae. Many species of fossil hornbills are known from the Miocene onwards; however, their exact number and taxonomy are unsettled due to ongoing discoveries.

## Conventions

Conservation status codes listed follow the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. Range maps are provided wherever possible; if a range map is not available, a description of the hornbill's range is provided. Ranges are based on the IOC World Bird List for that species unless otherwise noted. Population estimates are of the number of mature individuals and are taken from the IUCN Red List.
This list follows the taxonomic treatment (designation and order of species) and nomenclature (scientific and common names) of version 13.2 of the IOC World Bird List. Where the taxonomy proposed by the IOC World Bird List conflicts with the taxonomy followed by the IUCN or the 2023 edition of The Clements Checklist of Birds of the World, the disagreement is noted next to the species's common name (for nomenclatural disagreements) or scientific name (for taxonomic disagreements).

## Classification

The International Ornithologists' Union (IOU) recognises 62 species of hornbills in across two families and fifteen genera. This list does not include hybrid species, extinct prehistoric species, or putative species not yet accepted by the IOU.
* Family Bucorvidae
** Genus Bucorvus: two species
* Family Bucerotidae
** Genus Tockus: ten species
** Genus Lophoceros: eight species
** Genus Bycanistes: six species
** Genus Ceratogymna: two species
** Genus Horizocerus: two species
** Genus Berenicornis: one species
** Genus Buceros: three species
** Genus Rhinoplax: one species
** Genus Anthracoceros: five species
** Genus Ocyceros: three species
** Genus Anorrhinus: three species
** Genus Aceros: one species
** Genus Rhyticeros: six species
** Genus Rhabdotorrhinus: four species
** Genus Penelopides: five species

## Hornbills
### Bucorvidae

Genus Bucorvus – Lesson, 1830 – 2 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Abyssinian ground hornbill | B. abyssinicus (Boddaert, 1783) | Africa | VU  Unknown |
| Southern ground hornbill | B. leadbeateri (Vigors, 1825) | Southern and East Africa | VU  Unknown |

### Bucerotidae

Genus Tockus – Lesson, R. P., 1830 – 10 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Tanzanian red-billed hornbill | T. ruahae Kemp and Delport, 2002 | Central Tanzania | NE  Unknown |
| Western red-billed hornbill | T. kempi Tréca & Érard, 2000 | West Africa | NE  Unknown |
| Damara red-billed hornbill | T. damarensis (Shelley, 1888) | Southern Africa | LC  Unknown |
| Southern red-billed hornbill | T. rufirostris (Sundevall, 1850) | Southern Africa | NE  Unknown |
| Northern red-billed hornbill | T. erythrorhynchus (Temminck, 1823) | Africa | NE  Unknown |
| Monteiro's hornbill | T. monteiri Hartlaub, 1865 | Angola and Namibia | LC  Unknown |
| Von der Decken's hornbill | T. deckeni (Cabanis, 1868) | East Africa | LC  Unknown |
| Jackson's hornbill | T. jacksoni (Ogilvie-Grant, 1891) | East Africa | LC  Unknown |
| Southern yellow-billed hornbill | T. leucomelas (Lichtenstein, M. H. C., 1842) Two subspecies T. l. elegans T. l. leucomelas | Southern Africa | LC  Unknown |
| Eastern yellow-billed hornbill | T. flavirostris (Rüppell, 1835) | East Africa | LC  Unknown |
Genus Lophoceros – Hemprich and Ehrenberg, 1833 – 8 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Bradfield's hornbill | L. bradfieldi (Roberts, 1930) | Southern Africa | LC  Unknown |
| Crowned hornbill | L. alboterminatus Büttikofer, 1889 | Africa | LC  Unknown |
| West African pied hornbill | L. semifasciatus (Hartlaub, 1855) | West Africa | LC  Unknown |
| Congo pied hornbill | L. fasciatus (Shaw, 1812) | Central Africa | LC  Unknown |
| Hemprich's hornbill | L. hemprichii (Ehrenberg, 1833) | East Africa | LC  Unknown |
| African grey hornbill | L. nasutus (Linnaeus, 1766) Two subspecies L. n. nasutus L. n. epirhinus | Africa | LC  Unknown |
| Red-billed dwarf hornbill | L. camurus (Cassin, 1857) | East Africa | LC  Unknown |
| Pale-billed hornbill | L. pallidirostris (Hartlaub and Finsch, 1870) Two subspecies L. p. pallidirostris L. p. neumanni | Southern Africa | LC  Unknown |
Genus Bycanistes – Cabanis and Heine, 1860 – 6 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Piping hornbill | B. fistulator (Cassin, 1850) Three subspecies B. f. fistulator B. f. sharpii B. f. duboisi | West and Central Africa | LC  Unknown |
| Trumpeter hornbill | B. bucinator (Temminck, 1824) | Southern and East Africa | LC  Unknown |
| Brown-cheeked hornbill | B. cylindricus (Temminck, 1831) | West Africa | VU  Unknown |
| White-thighed hornbill | B. albotibialis (Cassin and Reichenow, 1877) | Central Africa | LC  Unknown |
| Black-and-white-casqued hornbill | B. subcylindricus (Sclater, P. L., 1871) Two subspecies B. s. subcylindricus B. s. subquadratus | Central and West Africa | LC  Unknown |
| Silvery-cheeked hornbill | B. brevis Friedmann, 1929 | East Africa | LC  Unknown |
Genus Ceratogymna – Bonaparte, 1854 – 2 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Black-casqued hornbill | C. atrata (Temminck, 1835) | West and Central Africa | VU  8,000–9,000 |
| Yellow-casqued hornbill | C. elata (Temminck, 1831) | West and Central Africa | LC  Unknown |
Genus Horizocerus – Oberholser, 1899 – 2 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Black dwarf hornbill | H. hartlaubi (Gould, 1861) Two subspecies H. h. hartlaubi H. h. granti | Central and West Africa | LC  Unknown |
| White-crested hornbill | H. albocristatus (Cassin, 1848) Three subspecies H. a. albocristatus H. a. macrourus H. a. cassini | Central and West Africa | LC  Unknown |
Genus Berenicornis – Bonaparte, 1850 – 1 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| White-crowned hornbill | B. comatus (Raffles, 1822) | Southeast Asia | EN  Unknown |
Genus Buceros – Linnaeus, 1758 – 3 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Rhinoceros hornbill | B. rhinoceros Linnaeus, 1758 Three subspecies B. r. borneoensis B. r. rhinoceros B. r. silvestris | Southeast Asia | VU  Unknown |
| Great hornbill | B. bicornis Linnaeus, 1758 | South and Southeast Asia | VU  13,000–27,000 |
| Rufous hornbill | B. hydrocorax Linnaeus, 1766 Three subspecies B. h. hydrocorax B. h. semigaleatus B. h. mindanensis | Philippines | VU  Unknown |
Genus Rhinoplax – Gloger, 1841 – 1 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Helmeted hornbill | R. vigil (Pennant, 1781) | Southeast Asia | CR  Unknown |
Genus Anthracoceros – Reichenbach, 1849 – 5 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Palawan hornbill | A. marchei Oustalet, 1885 | Palawan and surrounding islands | VU  2,500–9,999 |
| Oriental pied hornbill | A. albirostris (Shaw, 1808) Two subspecies A. a. albirostris A. a. convexus | South and Southeast Asia | LC  Unknown |
| Malabar pied hornbill | A. coronatus (Boddaert, 1783) | India and Sri Lanka | NT  Unknown |
| Sulu hornbill | A. montani (Oustalet, 1880) | Sulu Archipelago | CR  1–49 |
| Black hornbill | A. malayanus (Raffles, 1822) | Southeast Asia | VU  Unknown |
Genus Ocyceros – Hume, 1873 – 3 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Malabar grey hornbill | O. griseus (Latham, 1790) | Southwestern India | VU  Unknown |
| Sri Lanka grey hornbill | O. gingalensis (Shaw, 1812) | Sri Lanka | LC  Unknown |
| Indian grey hornbill | O. birostris (Scopoli, 1786) | India and Nepal | LC  Unknown |
Genus Anorrhinus – Reichenbach, 1849 – 3 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Tickell's brown hornbill | A. tickelli (Blyth, 1855) | Myanmar and Thailand | NT  2,500–9,999 |
| Austen's brown hornbill | A. austeni Jerdon, 1872 | Indochina | NT  Unknown |
| Bushy-crested hornbill | A. galeritus (Temminck, 1831) | Southeast India | NT  Unknown |
Genus Aceros – Hodgson, 1844 – 1 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Rufous-necked hornbill | A. nipalensis (Vigors, 1825) | Northwest India and Indochina | VU  7,000–10,000 |
Genus Rhyticeros – Reichenbach, 1849 – 6 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Blyth's hornbill | R. plicatus (Pennant, 1781) | Moluccas and Oceania | VU  Unknown |
| Narcondam hornbill | R. narcondami Hume, 1873 | Narcondam Island | VU  300–650 |
| Wreathed hornbill | R. undulatus (Shaw, 1811) | South and Southeast Asia | VU  Unknown |
| Sumba hornbill | R. everetti Rothschild, 1898 | Sumba Island | VU  1,000–2,000 |
| Plain-pouched hornbill | R. subruficollis (Blyth, 1843) | Southeast Asia | VU  1,500–7,000 |
| Knobbed hornbill | R. cassidix (Temminck, 1823) | Sulawesi and surrounding islands | VU  Unknown |
Genus Rhabdotorrhinus – Meyer, A. B. and Wiglesworth, 1898 – 4 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Walden's hornbill | R. waldeni (Sharpe, 1877) | Panay and Negros | CR  1,000–2,499 |
| Writhed hornbill | R. leucocephalus (Vieillot, 1816) | Mindanao | NT  Unknown |
| Sulawesi hornbill | R. exarhatus (Temminck, 1823) Two subspecies R. e. exarhatus R. e. sanfordi | Sulawesi | VU  Unknown |
| Wrinkled hornbill | R. corrugatus (Temminck, 1832) | Southeast Asia | EN  Unknown |
Genus Penelopides – Reichenbach, 1849 – 5 species :
| Common name | Scientific name and subspecies | Range | IUCN status and estimated population |
| Luzon hornbill | P. manillae (Boddaert, 1783) Two subspecies P. m. manillae P. m. sanfordi | Luzon and surrounding islands | LC  Unknown |
| Mindoro hornbill | P. mindorensis Steere, 1890 | Mindoro | EN  250–999 |
| Mindanao hornbill | P. affinis Tweeddale, 1877 Two subspecies P. a. affinis P. a. basilanicus | Mindanao and surrounding islands | LC  Unknown |
| Samar hornbill | P. corrugatus Steere, 1890 | Eastern Visayas | NE  Unknown |
| Visayan hornbill | P. panini (Boddaert, 1783) Two subspecies P. p. ticaensis P. p. panini | Western Visayas | EN  1,200 |