List of Otidiformes by population explained

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. This list is not comprehensive, as not all species have had their global populations estimated.

Species by global population

!Common name!Binomial name!Population!Status!Trend!Notes!Image

Great Indian bustard	Ardeotis nigriceps	300^[1]	CR		Maximum estimate. Equal to 250 mature individuals.
Bengal florican	Houbaropsis bengalensis	350-1,500^[2]	CR		Equal to 250-999 mature individuals.
Lesser florican	Sypheotides indicus	730^[3]	CR		Estimate for mature individuals only. Wider estimate is 356–1,228 mature individuals.
Blue bustard	Eupodotis caerulescens	12,000-15,000^[4]	NT		Equal to 8,000-10,000 mature individuals.
African houbara	Chlamydotis undulata	20,000-49,999^[5]	VU		Equal to 13,000-33,000 mature individuals.
Great bustard	Otis tarda	44,000-57,000^[6]	VU
Asian houbara	Chlamydotis macqueenii	50,000-99,999^[7]	VU		Equal to 33,000-67,000 mature individuals. Global population estimates are difficult to establish for this species.
Australian bustard	Ardeotis australis	100,000^[8]	LC		Maximum estimate. Roughly equal to 6,700-67,000 mature individuals.
Little bustard	Tetrax tetrax	100,000-499,999^[9]	NT		European subpopulation estimated at 122,000-240,000 mature individuals.
Ludwig's bustard	Neotis ludwigii	100,000-499,999^[10]	EN		Estimate may be too wide. Further work to refine it is underway in Namibia.

References

1. IUCN . 2018-08-17 . Ardeotis nigriceps: BirdLife International: The IUCN Red List of Threatened Species 2018: e.T22691932A134188105 . en . 10.2305/iucn.uk.2018-2.rlts.t22691932a134188105.en. free .
2. IUCN . 2018-08-07 . Houbaropsis bengalensis: BirdLife International: The IUCN Red List of Threatened Species 2018: e.T22692015A130184896 . en . 10.2305/iucn.uk.2018-2.rlts.t22692015a130184896.en. free .
3. IUCN . 2021-08-12 . Sypheotides indicus: BirdLife International: The IUCN Red List of Threatened Species 2021: e.T22692024A199959007 . en . 10.2305/iucn.uk.2021-3.rlts.t22692024a199959007.en. free .
4. Web site: 2017-10-01 . Eupodotis caerulescens: BirdLife International . 2023-03-17 . IUCN Red List of Threatened Species.
5. IUCN . 2016-10-01 . Chlamydotis undulata: BirdLife International: The IUCN Red List of Threatened Species 2016: e.T22728245A90341807 . en . 10.2305/iucn.uk.2016-3.rlts.t22728245a90341807.en. free .
6. IUCN . 2017-10-01 . Otis tarda: BirdLife International: The IUCN Red List of Threatened Species 2017: e.T22691900A119044104 . en . 10.2305/iucn.uk.2017-3.rlts.t22691900a119044104.en. free .
7. IUCN . 2021-08-18 . Chlamydotis macqueenii: BirdLife International: The IUCN Red List of Threatened Species 2021: e.T22733562A205364424 . en . 10.2305/iucn.uk.2021-3.rlts.t22733562a205364424.en. free .
8. IUCN . 2016-10-01 . Ardeotis australis: BirdLife International: The IUCN Red List of Threatened Species 2016: e.T22691940A93330335 . en . 10.2305/iucn.uk.2016-3.rlts.t22691940a93330335.en. free .
9. IUCN . 2018-08-07 . Tetrax tetrax: BirdLife International: The IUCN Red List of Threatened Species 2018: e.T22691896A129913710 . en . 10.2305/iucn.uk.2018-2.rlts.t22691896a129913710.en. free .
10. IUCN . 2016-10-01 . Neotis ludwigii: BirdLife International: The IUCN Red List of Threatened Species 2018: e.T22691910A129456278 . en . 10.2305/iucn.uk.2016-3.rlts.t22691910a129456278.en. free .