Biology:List of Podicipediformes by population

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This is a list of Podicipediformes 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.

The IOC World Bird List (version 15.1) recognizes 23 species of Podicipediformes, three of which are extinct.[1] IUCN/BirdLife International have assessed and quantified population sizes for 22 of these species, excepting tricolored grebe. Additionally, IUCN/BirdLife International recognize a split in silvery grebe into northern and southern species.

There are three species listed as members of Podicipediformes which are extinct. They are as follows:

  • Alaotra grebe (Tachybaptus rufolavatus) - declared extinct in 2010, but last sighted in 1985.[2]
  • Atitlán grebe (Podilymbus gigas) - species declared extinct in 1986, following rapid decline.[3]
  • Colombian grebe (Podiceps andinus) - last confirmed sighting in 1977.[4]

Species by global population

Common name Binomial name Population Status Trend Notes Image
Junin grebe Podiceps taczanowskii 140-320[5] Template:IUCN-EN[5] Decrease[5] Endemic to Lake Junín, Peru.[5] 175px
Hooded grebe Podiceps gallardoi 650-800[6] Template:IUCN-CR[6] Steady[6] Total population estimated at 3,000 – 5,000 in mid-1980s.[6] 175px
Madagascar grebe Tachybaptus pelzelnii 1,000-2,499[7] Template:IUCN-EN[7] Decrease[7] 175px
New Zealand grebe Poliocephalus rufopectus 1,000-5,000[8] Template:IUCN-LC[8] Increase[8] Best estimate for breeding population is 2,000-4,000 individuals.[8] 175px
Hoary-headed grebe Poliocephalus poliocephalus 16,600-670,000[9] Template:IUCN-LC[9] Steady[9] Total population is estimated to be 25,000-1,000,000 individuals.[9] 175px
Australasian grebe Tachybaptus novaehollandiae 16,800-687,000[10] Template:IUCN-LC[10] ?[10] Total population is estimated to be 25,203-1,031,000 individuals.[10] 175px
Least grebe Tachybaptus dominicus 20,000-500,000[11] Template:IUCN-LC[11] Steady[11] 175px
Great grebe Podiceps major 26,700-93,300[12] Template:IUCN-LC[12] Steady[12] Total population is estimated to be 40,000-140,000 individuals.[12] 175px
Southern silvery grebe

(Silvery grebe)

Podiceps occipitalis 67,700-68,500[13] Template:IUCN-LC[13] Steady[13] Note that IUCN/BirdLife International list the Northern silvery grebe (P. juninensis) as a separate species. Population has not been quantified, but it is listed as Near Threatened.[14]

IOC retains this species as a subspecies within P. occipitalis.[1]

175px
White-tufted grebe Rollandia rolland 68,800-70,100[15] Template:IUCN-LC[15] Steady[15] Total population is estimated to be 103,250-105,200 individuals.[15] 175px
Western grebe Aechmophorus occidentalis 80,000-90,000[16] Template:IUCN-LC[16] Steady[16] 175px
Clark's grebe Aechmophorus clarkii 81,000[17] Template:IUCN-LC[17] Decrease[17] 175px
Red-necked grebe Podiceps grisegena 190,000-290,000[18] Template:IUCN-LC[18] Decrease[18] Values provided are an estimate of the total population.[18] 175px
Horned grebe Podiceps auritus 239,000-583,000[19] Template:IUCN-VU[19] Decrease[19] Values provided are an estimate of the total population.[19] 175px
Little grebe Tachybaptus ruficollis 384,000-2,350,000[20] Template:IUCN-LC[20] ?[20] Total population is estimated to be 575,997-3,525,996 individuals.[20]

Note that the IOC has split the tricolored grebe from this species.[1]

IUCN/BirdLife International maintain both species within T. ruficollis.[21]

175px
Pied-billed grebe Podilymbus podiceps 500,000[22] Template:IUCN-LC[22] Increase[22] 175px
Great crested grebe Podiceps cristatus 609,999-997,000[23] Template:IUCN-LC[23] ?[23] Total population is estimated to be 915,000-1,400,000 individuals.[23] 175px
Black-necked grebe Podiceps nigricollis 3,900,000-4,200,000[24] Template:IUCN-LC[24] ?[24] Values provided are an estimate of the total population.[24] 175px

See also

References

  1. ↑ 1.0 1.1 1.2 "Grebes, flamingos – IOC World Bird List". https://www.worldbirdnames.org/bow/grebes/. 
  2. ↑ BirdLife International (2023). "Tachybaptus rufolavatus". IUCN Red List of Threatened Species 2023. doi:10.2305/IUCN.UK.2023-1.RLTS.T22696558A208158571.en. https://www.iucnredlist.org/species/22696558/208158571. Retrieved 2025-12-22. 
  3. ↑ BirdLife International (2023). "Podilymbus gigas". IUCN Red List of Threatened Species 2023. doi:10.2305/IUCN.UK.2023-1.RLTS.T22696577A221205722.en. https://www.iucnredlist.org/species/22696577/221205722. Retrieved 2025-12-22. 
  4. ↑ BirdLife International (2023). "Podiceps andinus". IUCN Red List of Threatened Species 2023. doi:10.2305/IUCN.UK.2023-1.RLTS.T22696615A221206875.en. https://www.iucnredlist.org/species/22696615/221206875. Retrieved 2025-12-22. 
  5. ↑ 5.0 5.1 5.2 5.3 BirdLife International (2020). "Podiceps taczanowskii". IUCN Red List of Threatened Species 2020. doi:10.2305/IUCN.UK.2020-3.RLTS.T22696623A179685461.en. https://www.iucnredlist.org/species/22696623/179685461. Retrieved 12 November 2021. 
  6. ↑ 6.0 6.1 6.2 6.3 BirdLife International (2019). "Podiceps gallardoi". IUCN Red List of Threatened Species 2019. doi:10.2305/IUCN.UK.2019-3.RLTS.T22696628A145837361.en. https://www.iucnredlist.org/species/22696628/145837361. Retrieved 12 November 2021. 
  7. ↑ 7.0 7.1 7.2 BirdLife International (2018). "Tachybaptus pelzelnii". IUCN Red List of Threatened Species 2018. doi:10.2305/IUCN.UK.2018-2.RLTS.T22696565A131612478.en. https://www.iucnredlist.org/species/22696565/131612478. Retrieved 12 November 2021. 
  8. ↑ 8.0 8.1 8.2 8.3 BirdLife International. (2022). "Poliocephalus rufopectus". IUCN Red List of Threatened Species 2022. doi:10.2305/IUCN.UK.2022-1.RLTS.T22696592A209544697.en. https://www.iucnredlist.org/species/22696592/209544697. 
  9. ↑ 9.0 9.1 9.2 9.3 BirdLife International (2024). "Poliocephalus poliocephalus". IUCN Red List of Threatened Species 2024. doi:10.2305/IUCN.UK.2024-2.RLTS.T22696589A254007779.en. https://www.iucnredlist.org/species/22696589/254007779. Retrieved 2025-12-22. 
  10. ↑ 10.0 10.1 10.2 10.3 BirdLife International (2024). "Tachybaptus novaehollandiae". IUCN Red List of Threatened Species 2024. doi:10.2305/IUCN.UK.2024-2.RLTS.T22696553A265014836.en. https://www.iucnredlist.org/species/22696553/265014836. Retrieved 2025-12-22. 
  11. ↑ 11.0 11.1 11.2 BirdLife International (2021). "Tachybaptus dominicus". IUCN Red List of Threatened Species 2021. doi:10.2305/IUCN.UK.2021-3.RLTS.T22696571A139199440.en. https://www.iucnredlist.org/species/22696571/139199440. Retrieved 2025-12-22. 
  12. ↑ 12.0 12.1 12.2 12.3 BirdLife International (2024). "Podiceps major". IUCN Red List of Threatened Species 2024. doi:10.2305/IUCN.UK.2024-2.RLTS.T22696596A265019242.en. https://www.iucnredlist.org/species/22696596/265019242. Retrieved 2025-12-22. 
  13. ↑ 13.0 13.1 13.2 BirdLife International (2024). "Podiceps occipitalis". IUCN Red List of Threatened Species 2024. doi:10.2305/IUCN.UK.2024-2.RLTS.T62114375A265016345.en. https://www.iucnredlist.org/species/62114375/265016345. Retrieved 2025-12-22. 
  14. ↑ BirdLife International (2020). "Podiceps juninensis". IUCN Red List of Threatened Species 2020. doi:10.2305/IUCN.UK.2020-3.RLTS.T62114603A181449214.en. https://www.iucnredlist.org/species/62114603/181449214. Retrieved 2025-12-22. 
  15. ↑ 15.0 15.1 15.2 15.3 BirdLife International (2024). "Rollandia rolland". IUCN Red List of Threatened Species 2024. doi:10.2305/IUCN.UK.2024-2.RLTS.T22696530A264976808.en. https://www.iucnredlist.org/species/22696530/264976808. Retrieved 2025-12-22. 
  16. ↑ 16.0 16.1 16.2 BirdLife International (2019). "Aechmophorus occidentalis". IUCN Red List of Threatened Species 2019. doi:10.2305/IUCN.UK.2019-3.RLTS.T22696631A139355294.en. https://www.iucnredlist.org/species/22696631/139355294. Retrieved 12 November 2021. 
  17. ↑ 17.0 17.1 17.2 BirdLife International (2025). "Aechmophorus clarkii". IUCN Red List of Threatened Species 2025. doi:10.2305/IUCN.UK.2025-2.RLTS.T22696634A139348808.en. https://www.iucnredlist.org/species/22696634/139348808. Retrieved 2025-12-22. 
  18. ↑ 18.0 18.1 18.2 18.3 BirdLife International (2018). "Podiceps grisegena". IUCN Red List of Threatened Species 2018. doi:10.2305/IUCN.UK.2018-2.RLTS.T22696599A132582688.en. https://www.iucnredlist.org/species/22696599/132582688. Retrieved 12 November 2021. 
  19. ↑ 19.0 19.1 19.2 19.3 BirdLife International (2018). "Podiceps auritus". IUCN Red List of Threatened Species 2018. doi:10.2305/IUCN.UK.2018-2.RLTS.T22696606A132066871.en. https://www.iucnredlist.org/species/22696606/132066871. Retrieved 12 November 2021. 
  20. ↑ 20.0 20.1 20.2 20.3 BirdLife International (2025). "Tachybaptus ruficollis". IUCN Red List of Threatened Species 2025. doi:10.2305/IUCN.UK.2025-2.RLTS.T22696545A281865439.en. https://www.iucnredlist.org/species/22696545/281865439. Retrieved 2025-12-22. 
  21. ↑ Handbook of the Birds of the World and BirdLife International Digital Checklist of the Birds of the World: Version 10. BirdLife International. 2025. https://datazone.birdlife.org/about-our-science/taxonomy#birdlife-s-taxonomic-checklist. 
  22. ↑ 22.0 22.1 22.2 BirdLife International (2021). "Podilymbus podiceps". IUCN Red List of Threatened Species 2021. doi:10.2305/IUCN.UK.2021-3.RLTS.T22696574A138962202.en. https://www.iucnredlist.org/species/22696574/138962202. Retrieved 2025-12-22. 
  23. ↑ 23.0 23.1 23.2 23.3 BirdLife International (2019). "Podiceps cristatus". IUCN Red List of Threatened Species 2019. doi:10.2305/IUCN.UK.2019-39.RLTS.T22696602A154250080.en. https://www.iucnredlist.org/species/22696602/154250080. Retrieved 12 November 2021. 
  24. ↑ 24.0 24.1 24.2 24.3 BirdLife International (2018). "Podiceps nigricollis". IUCN Red List of Threatened Species 2018. doi:10.2305/IUCN.UK.2018-2.RLTS.T22696610A132584321.en. https://www.iucnredlist.org/species/22696610/132584321. Retrieved 12 November 2021. 

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