List of Bucerotiformes by population

This is a list of Bucerotiformes species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.

This list is incomprehensive, as not all Bucerotiformes have had their numbers quantified.

The IOC World Bird List (version 15.1) recognizes 75 species of Bucerotiformes.[1]

This list follows IUCN classifications for species names. Where IUCN classifications differ from other ornithological authorities, alternative names are noted.

Some species listed as members of Bucerotiformes are extinct:

Species by global population

Common name Binomial name Population Status Trend Notes Image
Sulu hornbill Anthracoceros montani 1 – 49[3] CR[3] [3]
Mindoro hornbill Penelopides mindorensis 250 - 999[4] EN[4] [4]
Narcondam hornbill Rhyticeros narcondami 300 - 650[5] VU[5] [5]
Sumba hornbill Rhyticeros everetti 1,000 - 2,000[6] EN[6] [6]
Rufous-headed hornbill

(Walden's hornbill)

Rhabdotorrhinus waldeni 1,000 - 3,000[7] EN[7] [7] Total population is estimated to be 1,500-5,000 individuals.[7]
Visayan hornbill Penelopides panini 1,200[8] EN[8] [8] Total population is estimated to be at least 1,800 individuals.[8]

Note that IOC taxonomy splits an additional species, the Samar hornbill, from this species.[9]

IUCN/BirdLife International maintain both species within P. panini.[10]

Plain-pouched hornbill Rhyticeros subruficollis 2,500 - 5,000[11] VU[11] [11] Total population is estimated to be, at minimum, 4,000 individuals.[11]
Tickell's brown hornbill Anorrhinus tickelli 2,500 - 9,999[12] NT[12] [12]
Rufous-necked hornbill Aceros nipalensis 7,000 - 10,000[13] VU[13] [13] Total population is estimated to be 12,000-15,000 individuals.[13]
Malabar pied hornbill Anthracoceros coronatus 7,200 - 72,000[14] NT[14] [14] Best estimate for number of mature individuals is 7,200-25,000.[14]
Yellow-casqued hornbill Ceratogymna elata 8,000 - 9,000[15] VU[15] [15] Total population has been previously estimated as 12,533 individuals. This may be an underestimate, given the size of remaining suitable habitat.[15]
Great hornbill Buceros bicornis 13,000 - 27,000[16] VU[16] [16] Total population is estimated (precautionary) to be 23,000 - 71,000 individuals.[16]
Palawan hornbill Anthracoceros marchei 20,000 - 49,999[17] VU[17] [17]
Common hoopoe

(Eurasian hoopoe)

Upupa epops 5,000,000 - 10,000,000[18] LC[18] [18] Values given are for total population.[18]


See also

References

  1. ^ "Mousebirds, Cuckoo Roller, trogons, hoopoes, hornbills – IOC World Bird List". www.worldbirdnames.org. Retrieved 2026-01-19.
  2. ^ BirdLife International (2024). "Upupa antaios". IUCN Red List of Threatened Species. 2024 e.T22728670A262288483. doi:10.2305/IUCN.UK.2024-2.RLTS.T22728670A262288483.en.
  3. ^ a b c BirdLife International. (2020). "Anthracoceros montani". IUCN Red List of Threatened Species. 2020 e.T22682447A178062684. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682447A178062684.en. Retrieved 11 August 2025.
  4. ^ a b c BirdLife International. (2020). "Penelopides mindorensis". IUCN Red List of Threatened Species. 2020 e.T22682491A184680868. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682491A184680868.en. Retrieved 11 August 2025.
  5. ^ a b c BirdLife International. (2020). "Rhyticeros narcondami". IUCN Red List of Threatened Species. 2020 e.T22682531A182554475. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682531A182554475.en. Retrieved 11 August 2025.
  6. ^ a b c BirdLife International. (2020). "Rhyticeros everetti". IUCN Red List of Threatened Species. 2020 e.T22682535A184201170. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682535A184201170.en. Retrieved 11 August 2025.
  7. ^ a b c d BirdLife International (2025). "Rhabdotorrhinus waldeni". IUCN Red List of Threatened Species. 2025 e.T22682517A274594116. doi:10.2305/IUCN.UK.2025-2.RLTS.T22682517A274594116.en.
  8. ^ a b c d BirdLife International. (2020). "Penelopides panini". IUCN Red List of Threatened Species. 2020 e.T22682494A184683355. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682494A184683355.en. Retrieved 11 August 2025.
  9. ^ "Mousebirds, Cuckoo Roller, trogons, hoopoes, hornbills – IOC World Bird List". www.worldbirdnames.org. Retrieved 2026-01-01.
  10. ^ Handbook of the Birds of the World and BirdLife International Digital Checklist of the Birds of the World: Version 10. BirdLife International. October 2025.
  11. ^ a b c d BirdLife International (2025). "Rhyticeros subruficollis". IUCN Red List of Threatened Species. 2025 e.T22682541A207290329. doi:10.2305/IUCN.UK.2025-2.RLTS.T22682541A207290329.en.
  12. ^ a b c BirdLife International. (2020). "Anorrhinus tickelli". IUCN Red List of Threatened Species. 2020 e.T22731946A183158357. doi:10.2305/IUCN.UK.2020-3.RLTS.T22731946A183158357.en. Retrieved 11 August 2025.
  13. ^ a b c d BirdLife International. (2020). "Aceros nipalensis". IUCN Red List of Threatened Species. 2020 e.T22682510A176267243. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682510A176267243.en. Retrieved 11 August 2025.
  14. ^ a b c d BirdLife International (2025). "Anthracoceros coronatus". IUCN Red List of Threatened Species. 2025 e.T22682433A184946848. doi:10.2305/IUCN.UK.2025-2.RLTS.T22682433A184946848.en.
  15. ^ a b c d BirdLife International (2025). "Ceratogymna elata". IUCN Red List of Threatened Species. 2025 e.T22682627A280610032. doi:10.2305/IUCN.UK.2025-2.RLTS.T22682627A280610032.en.
  16. ^ a b c d BirdLife International. (2020). "Buceros bicornis". IUCN Red List of Threatened Species. 2020 e.T22682453A184603863. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682453A184603863.en. Retrieved 11 August 2025.
  17. ^ a b c BirdLife International. (2021). "Anthracoceros marchei". IUCN Red List of Threatened Species. 2021 e.T22682444A205515479. doi:10.2305/IUCN.UK.2021-3.RLTS.T22682444A205515479.en. Retrieved 11 August 2025.
  18. ^ a b c d BirdLife International. (2020). "Upupa epops". IUCN Red List of Threatened Species. 2020 e.T22682655A181836360. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682655A181836360.en. Retrieved 11 August 2025.
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