List of Otidiformes by population

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This is a list of Otidiformes 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.

Contents

The IOC World Bird List (version 15.1) recognizes 26 species of Otidiformes. [1] IUCN/BirdLife International have assessed all members of this order, with population estimates provided for 11 (42%) species.

This list follows IUCN classifications for species names. Where IUCN classifications differ from other ornithological authorities, alternative names are noted. While not all of these species have had their populations quantified, species without estimates are also listed below in a separate table.

Species by global population

Common name Binomial name Population Status TrendNotesImage
Great Indian bustard Ardeotis nigriceps50-249 [2] CR [2] Decrease2.svg [2] Total population is estimated to be less than 300 individuals. [2] Ardeotis nigriceps, Desert National Park, Rajasthan, India 1.jpg
Bengal florican Houbaropsis bengalensis250-999 [3] CR [3] Decrease2.svg [3] Total population is estimated to be 375-1,499 individuals. [3] Bengal Florican Houbaropsis bengalensis bengalensis (cropped).jpg
Lesser florican Sypheotides indicus356-1,228 [4] CR [4] Decrease2.svg [4] Best estimate for breeding population is 730 mature individuals. [4] Male Lesser Florican (crop).jpg
Australian bustard Ardeotis australis6,700-67,000 [5] LC [5] Decrease2.svg [5] Total population is estimated to be less than 100,000 individuals. [5] Ardeotis australis - queensland-2024.jpg
Blue bustard

(Blue korhaan)

Eupodotis caerulescens8,000-10,000 [6] NT [6] Decrease2.svg [6] Total population is estimated to be 12,000-15,000 individuals. [6] Blue Korhaan (Eupodotis caerulescens) male.jpg
African houbara Chlamydotis undulata11,000-30,000 [7] VU [7] Decrease2.svg [7] Value provided is a rough estimate for total population. [7] Houbara Bustard Chlamydotis undulata fuertaventurae (8469443653).jpg
Kori bustard Ardeotis kori20,000-50,000 [8] NT [8] Decrease2.svg [8] Values provided are a tentative estimate of total population. [8] Kori bustard (Ardeotis kori).jpg
Great bustard Otis tarda29,600-33,000 [9] EN [9] Decrease2.svg [9] Otis tarda, Hortobagy, Hungary 1.jpg
Asian houbara Chlamydotis macqueenii33,000-67,000 [10] VU [10] Decrease2.svg [10] Total population is estimated to be 50,000-99,999 individuals. [10] MacQueens Bustard in Greater Rann of Kutch, Gujarat, India.jpg
Ludwig's bustard Neotis ludwigii70,000-335,000 [11] EN [11] Decrease2.svg [11] Total population is estimated to be 100,000-499,999 individuals. [11] Neotis ludwigii 365023721.jpg
Little bustard Tetrax tetrax100,000-499,999 [12] NT [12] Decrease2.svg [12] European subpopulation estimated at 122,000-240,000 mature individuals. [12] Tetrax tetrax, Castuera, Estremadura, Spain 1.jpg

Species without population estimates

Common name Binomial name Population Status TrendNotesImage
Southern black bustard

(Southern black korhaan)

Afrotis afraunknown [13] VU [13] Decrease2.svg [13] Southern Black Korhaan (Afrotis afra) male (30270325416).jpg
Nubian bustard Neotis nubiaunknown [14] VU [14] Decrease2.svg [14] Outarde 20240731.jpg
Arabian bustard Ardeotis arabsunknown [15] NT [15] Decrease2.svg [15] Arabian Bustard.jpg
Little brown bustard Heterotetrax humilisunknown [16] NT [16] Decrease2.svg [16]
Denham's bustard Neotis denhamiunknown [17] NT [17] Decrease2.svg [17] Southern African population is estimated to be between 2,500-10,000 mature individuals; populations across the rest of range have not been estimated well enough to provide a global estimate. [17] Neotis denhami 63245580.jpg
Northern black bustard

(Northern black korhaan)

Afrotis afraoidesunknown [18] LC [18] Steady2.svg [18] Northern black korhaan (Afrotis afraoides) male.jpg
White-bellied bustard Eupodotis senegalensisunknown [19] LC [19] Decrease2.svg [19] White-bellied Bustard (Eupodotis senegalensis) male (20556422424).jpg
Rüppell's bustard

(Rüppell's korhaan)

Heterotetrax rueppeliiunknown [20] LC [20] Steady2.svg [20] Eupodotis rueppellii.jpg
Karoo bustard

(Karoo korhaan)

Heterotetrax vigorsiiunknown [21] LC [21] Increase2.svg [21] Eupodotis vigorsii 116425172.jpg
Hartlaub's bustard Lissotis hartlaubiiunknown [22] LC [22] Steady2.svg [22] Lissotis hartlaubii -Serengeti National Park, Tanzania-8.jpg
Black-bellied bustard Lissotis melanogasterunknown [23] LC [23] Decrease2.svg [23] Black-bellied Bustard (Lissotis melanogaster) (46547892061).jpg
Buff-crested bustard Lophotis gindianaunknown [24] LC [24] Steady2.svg [24] Eupodotis gindiana -Kenya-8a, crop.jpg
Red-crested bustard

(Red-crested korhaan)

Lophotis ruficristaunknown [25] LC [25] Steady2.svg [25] Lophotis ruficrista 1.jpg
Savile's bustard Lophotis savileiunknown [26] LC [26] Steady2.svg [26] Savile's Bustard iNaturalist.jpg
Heuglin's bustard Neotis heugliniiunknown [27] LC [27] Steady2.svg [27] Neotis heuglinii 110378493.jpg


See also

References

  1. ↑ "Turacos, bustards, cuckoos, mesites, sandgrouse – IOC World Bird List". www.worldbirdnames.org. Retrieved 2025-12-22.
  2. 1 2 3 4 BirdLife International (2018). "Ardeotis nigriceps". The IUCN Red List of Threatened Species. 2018 e.T22691932A134188105. doi: 10.2305/iucn.uk.2018-2.rlts.t22691932a134188105.en .
  3. 1 2 3 4 BirdLife International (2018). "Houbaropsis bengalensis". IUCN Red List of Threatened Species . 2018 e.T22692015A130184896. doi: 10.2305/iucn.uk.2018-2.rlts.t22692015a130184896.en .
  4. 1 2 3 4 BirdLife International (2021). "Sypheotides indicus". IUCN Red List of Threatened Species . 2021 e.T22692024A199959007. doi: 10.2305/iucn.uk.2021-3.rlts.t22692024a199959007.en .
  5. 1 2 3 4 BirdLife International (2024). "Ardeotis australis". IUCN Red List of Threatened Species . 2024 e.T22691940A263666217. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691940A263666217.en . Retrieved 2025-12-22.
  6. 1 2 3 4 "Eupodotis caerulescens: BirdLife International". IUCN Red List of Threatened Species. 2017. Retrieved 2023-03-17.
  7. 1 2 3 4 BirdLife International (2023). "Chlamydotis undulata". IUCN Red List of Threatened Species . 2023 e.T22728245A208501099. doi: 10.2305/IUCN.UK.2023-1.RLTS.T22728245A208501099.en . Retrieved 2025-12-22.
  8. 1 2 3 4 BirdLife International (2025). "Ardeotis kori". IUCN Red List of Threatened Species . 2025 e.T22691928A246077557. doi: 10.2305/IUCN.UK.2025-2.RLTS.T22691928A246077557.en . Retrieved 2025-12-22.
  9. 1 2 3 BirdLife International (2023). "Otis tarda". IUCN Red List of Threatened Species . 2023 e.T22691900A226280431. doi: 10.2305/IUCN.UK.2023-1.RLTS.T22691900A226280431.en . Retrieved 2025-12-22.
  10. 1 2 3 4 BirdLife International (2021). "Chlamydotis macqueenii". IUCN Red List of Threatened Species . 2021 e.T22733562A205364424. doi: 10.2305/iucn.uk.2021-3.rlts.t22733562a205364424.en .
  11. 1 2 3 4 BirdLife International (2025). "Neotis ludwigii". IUCN Red List of Threatened Species . 2025 e.T22691910A265043015. doi: 10.2305/IUCN.UK.2025-2.RLTS.T22691910A265043015.en . Retrieved 2025-12-22.
  12. 1 2 3 4 BirdLife International (2018). "Tetrax tetrax". IUCN Red List of Threatened Species . 2018 e.T22691896A129913710. doi: 10.2305/iucn.uk.2018-2.rlts.t22691896a129913710.en .
  13. 1 2 3 BirdLife International (2025). "Afrotis afra". IUCN Red List of Threatened Species . 2025 e.T22691975A231842203. doi: 10.2305/IUCN.UK.2025-2.RLTS.T22691975A231842203.en . Retrieved 2025-12-22.
  14. 1 2 3 BirdLife International (2025). "Neotis nubia". IUCN Red List of Threatened Species . 2025 e.T22691914A265041978. doi: 10.2305/IUCN.UK.2025-2.RLTS.T22691914A265041978.en . Retrieved 2025-12-22.
  15. 1 2 3 BirdLife International (2018). "Ardeotis arabs". IUCN Red List of Threatened Species . 2018 e.T22691924A129917069. doi: 10.2305/IUCN.UK.2018-2.RLTS.T22691924A129917069.en . Retrieved 2025-12-22.
  16. 1 2 3 BirdLife International (2025). "Heterotetrax humilis". IUCN Red List of Threatened Species . 2025 e.T22691991A265043348. doi: 10.2305/IUCN.UK.2025-2.RLTS.T22691991A265043348.en . Retrieved 2025-12-22.
  17. 1 2 3 4 BirdLife International (2025). "Neotis denhami". IUCN Red List of Threatened Species . 2025 e.T22691905A265042404. doi: 10.2305/IUCN.UK.2025-2.RLTS.T22691905A265042404.en . Retrieved 2025-12-22.
  18. 1 2 3 BirdLife International (2024). "Afrotis afraoides". IUCN Red List of Threatened Species . 2024 e.T22691970A263673251. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691970A263673251.en . Retrieved 2025-12-22.
  19. 1 2 3 BirdLife International (2024). "Eupodotis senegalensis". IUCN Red List of Threatened Species . 2024 e.T22691996A263667271. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691996A263667271.en . Retrieved 2025-12-22.
  20. 1 2 3 BirdLife International (2024). "Heterotetrax rueppelii". IUCN Red List of Threatened Species . 2024 e.T22691980A263670744. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691980A263670744.en . Retrieved 2025-12-22.
  21. 1 2 3 BirdLife International (2024). "Heterotetrax vigorsii". IUCN Red List of Threatened Species . 2024 e.T22691986A263669161. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691986A263669161.en . Retrieved 2025-12-22.
  22. 1 2 3 BirdLife International (2024). "Lissotis hartlaubii". IUCN Red List of Threatened Species . 2024 e.T22692011A263650083. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22692011A263650083.en . Retrieved 2025-12-22.
  23. 1 2 3 BirdLife International (2024). "Lissotis melanogaster". IUCN Red List of Threatened Species . 2024 e.T22692007A263652363. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22692007A263652363.en . Retrieved 2025-12-22.
  24. 1 2 3 BirdLife International (2024). "Lophotis gindiana". IUCN Red List of Threatened Species . 2024 e.T22691960A263663322. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691960A263663322.en . Retrieved 2025-12-22.
  25. 1 2 3 BirdLife International (2024). "Lophotis ruficrista". IUCN Red List of Threatened Species . 2024 e.T22691965A263660641. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691965A263660641.en . Retrieved 2025-12-22.
  26. 1 2 3 BirdLife International (2024). "Lophotis savilei". IUCN Red List of Threatened Species . 2024 e.T22691955A263661312. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691955A263661312.en . Retrieved 2025-12-22.
  27. 1 2 3 BirdLife International (2024). "Neotis heuglinii". IUCN Red List of Threatened Species . 2024 e.T22691920A263641558. doi: 10.2305/IUCN.UK.2024-2.RLTS.T22691920A263641558.en . Retrieved 2025-12-22.
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