List of Strigiformes by population
| The population of birds |
|---|
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This is a list of Strigiformes 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.
Not all Gruiformes have had their populations quantified, but species without population estimates are included in a secondary table below.
The IOC World Bird List (version 15.1) recognizes 254 species of Strigiformes, five of which are extinct.[1] This list follows IUCN classifications for species names and taxonomy. Where IUCN classifications differ from other ornithological authorities, alternative names and taxonomies are noted.
Some members of Strigiformes are extinct:
- Bermuda saw-whet owl (Aegolius gradyi), described from fossil records and explorer accounts of the bird in the 17th century.[2]
- Laughing owl (Ninox albifacies), last seen in 1914, may have been extant through 1920s.[3]
- Mauritius scops owl or Mauritius owl (Otus sauzieri), last seen in 1837; extinct by 1859. IUCN/BirdLife International place species in genus Mascarenotus.[4]
- Réunion scops owl or Réunion owl (Otus grucheti), went extinct in the 17th century after the colonization of the island of Réunion. IUCN/BirdLife International place species in genus Mascarenotus.[5]
- Rodrigues scops owl or Rodrigues owl (Otus murivorus), last recorded in 1726. IUCN/BirdLife International place species in genus Mascarenotus.[6]
Species by global population
| Common name | Binomial name | Population | Status | Trend | Notes | Image |
|---|---|---|---|---|---|---|
| Pernambuco pygmy owl | Glaucidium mooreorum | 0-49[7] | CR[7] | May be extinct. Last seen in 2001.[7] | ||
| Siau scops owl | Otus siaoensis | 1-49[8] | CR[8] | ![]() | ||
| Seychelles scops owl | Otus insularis | 200-280[9] | CR[9] | ![]() | ||
| Christmas Island boobook
(Christmas boobook) |
Ninox natalis | 240-1,200[10] | VU[10] | Best estimate for number of mature individuals is 340.[10] | ![]() | |
| Forest owlet | Athene blewitti | 250-999[11] | EN[11] | ![]() | ||
| Romblon boobook | Ninox spilonotus | 250-999[12] | EN[12] | ![]() | ||
| Cebu boobook | Ninox rumseyi | 250-999[13] | VU[13] | ![]() | ||
| São Tomé scops owl | Otus hartlaubi | 250-999[14] | VU[14] | Total population is estimated to be 350-1,500 individuals.[14] | ![]() | |
| Long-whiskered owlet | Xenoglaux loweryi | 250-999[15] | VU[15] | Total population is estimated to be 350-1,500 individuals.[15] | ![]() | |
| Camiguin boobook | Ninox leventisi | 250-1,400[16] | VU[16] | Best estimate for number of mature individuals is 250-999.[16] | ![]() | |
| Moheli scops owl | Otus moheliensis | 260[17] | EN[17] | |||
| Serendib scops owl | Otus thilohoffmanni | 400-1,000[18] | EN[18] | ![]() | ||
| Rote boobook | Ninox rotiensis | 500-5,000[19] | NT[19] | ![]() | ||
| Principe scops owl | Otus bikegila | 853-2,533[20] | CR[20] | Best estimate for number of mature individuals is 1,149-1,597.[20] | ![]() | |
| Blakiston's eagle-owl
(Blakiston's fish owl) |
Ketupa blakistoni | 900-1,700[21] | VU[21] | Best estimate for number of mature individuals is 900-1,150.[21]
IUCN/BirdLife International place this species in genus Bubo. |
![]() | |
| Sokoke scops owl | Otus ireneae | 1,000-2,000[22] | EN[22] | ![]() | ||
| Madagascar red owl
(Red owl) |
Tyto soumagnei | 1,250-3,750[23] | VU[23] | ![]() | ||
| Shelley's eagle-owl | Bubo shelleyi | 1,500-7,000[24] | VU[24] | Total population is estimated to be 2,500-9,999 individuals.[24] | ![]() | |
| Cloud-forest pygmy owl | Glaucidium nubicola | 1,900-22,500[25] | VU[25] | Best estimate for number of mature individuals is 2,500-9,999.[25] | ![]() | |
| Socotra scops owl | Otus socotranus | 2,000[26] | LC[26] | Total population is estimated to be 3,000 individuals.[26] | ![]() | |
| Togian boobook | Ninox burhani | 2,100-8,100[27] | NT[27] | ![]() | ||
| Powerful owl | Ninox strenua | 2,200-2,800[28] | LC[28] | Total population is estimated to be 3,250-4,250 individuals.[28] | ![]() | |
| Grande Comore scops owl
(Karthala scops owl) |
Otus pauliani | 2,300[29] | EN[29] | |||
| Anjouan scops owl | Otus capnodes | 2,300-3,600[30] | EN[30] | |||
| Santa Marta screech owl | Megascops gilesi | 2,300-7,500[31] | VU[31] | Newly described species, as of 2017.[32]
Population has not been directly quantified, but is extrapolated using the population density of the congeneric tawny-bellied screech owl.[31] |
![]() | |
| Pemba scops owl | Otus pembaensis | 2,500-3,000[33] | VU[33] | ![]() | ||
| Sulu boobook | Ninox reyi | 2,500-7,500[34] | VU[34] | ![]() | ||
| Malaita owl | Athene malaitae | 2,500-9,999[35] | VU[35] | |||
| Makira owl | Athene roseoaxillaris | 2,500-9,999[36] | VU[36] | |||
| Flores scops owl | Otus alfredi | 2,500-9,999[37] | VU[37] | ![]() | ||
| Rufous fishing owl | Scotopelia ussheri | 2,500-9,999[38] | VU[38] | ![]() | ||
| Golden masked owl | Tyto aurantia | 2,500-9,999[39] | VU[39] | ![]() | ||
| Albertine owlet | Glaucidium albertinum | 2,500-9,999[40] | NT[40] | Total population is estimated to be 3,500-15,000 individuals.[40] | ||
| Fearful owl | Nesasio solomonensis | 2,500-9,999[41] | NT[41] | ![]() | ||
| Nicobar scops owl | Otus alius | 2,500-9,999[42] | NT[42] | ![]() | ||
| Javan scops owl | Otus angelinae | 2,500-9,999[43] | NT[43] | ![]() | ||
| Rinjani scops owl | Otus jolandae | 2,500-9,999[44] | NT[44] | ![]() | ||
| Visayan scops owl
(Negros scops owl) |
Otus nigrorum | 2,500-9,999[45] | NT[45] | ![]() | ||
| Andaman boobook | Ninox affinis | 2,500-9,999[46] | LC[46] | ![]() | ||
| Enggano scops owl | Otus enganensis | 2,500-9,999[47] | LC[47] | |||
| Mindoro boobook | Ninox mindorensis | 2,500-25,000[48] | VU[48] | Best estimate for number of mature individuals in 2,500-9,999.[48] | ![]() | |
| Lesser sooty owl | Tyto multipunctata | 4,000[49] | LC[49] | Estimated to be around 2,000 breeding pairs.[49][50] | ![]() | |
| Arabian eagle-owl | Bubo milesi | 4,000-9,999[51] | LC[51] | ![]() | ||
| Sumba boobook | Ninox rudolfi | 5,000-24,000[52] | NT[52] | Best estimate for number of mature individuals is 5,000-15,000.[52] | ![]() | |
| Least boobook | Ninox sumbaensis | 10,000-19,999[53] | EN[53] | Total population is estimated to be 15,000-30,000 individuals.[53] | ![]() | |
| New Britain boobook | Ninox odiosa | 10,000-19,999[54] | VU[54] | ![]() | ||
| Guadalcanal owl | Athene granti | 10,000-19,999[55] | NT[55] | |||
| Palawan scops owl | Otus fuliginosus | 10,000-19,999[56] | LC[56] | ![]() | ||
| Mentawai scops owl | Otus mentawi | 10,000-19,999[57] | LC[57] | |||
| Chestnut-backed owlet | Glaucidium castanonotum | 10,000-20,000[58] | NT[58] | ![]() | ||
| Cyprus scops owl | Otus cyprius | 10,000-24,000[59] | LC[59] | ?[59] | Total population is estimated to be 15,000-36,000 individuals.[59] | ![]() |
| Banggai scops owl | Otus mendeni | 10,000-40,000[60] | NT[60] | ![]() | ||
| Flammulated owl | Psiloscops flammeolus | 12,000[61] | LC[61] | ?[61] | ![]() | |
| Tanimbar boobook | Ninox forbesi | 12,000-48,000[62] | LC[62] | ![]() | ||
| Snowy owl | Bubo scandiacus | 14,000-28,000[63] | VU[63] | ![]() | ||
| Spotted owl | Strix occidentalis | 15,000[64] | NT[64] | |||
| Biak scops owl | Otus beccarii | 15,000-45,000[65] | NT[65] | Best estimate for number of mature individuals is 15,000-20,000.[65] | ![]() | |
| Mindoro scops owl | Otus mindorensis | 15,750-44,000[66] | NT[66] | |||
| Tamaulipas pygmy owl | Glaucidium sanchezi | 20,000-49,999[67] | NT[67] | ![]() | ||
| Colima pygmy owl | Glaucidium palmarum | 20,000-49,999[68] | LC[68] | ![]() | ||
| Bearded screech owl | Megascops barbarus | 20,000-49,999[69] | LC[69] | ![]() | ||
| Bare-shanked screech owl | Megascops clarkii | 20,000-49,999[70] | LC[70] | ![]() | ||
| Balsas screech owl | Megascops seductus | 20,000-49,999[71] | LC[71] | ![]() | ||
| Unspotted saw-whet owl | Aegolius ridgwayi | 20,000-50,000[72] | LC[72] | ![]() | ||
| Costa Rican pygmy owl | Glaucidium costaricanum | 20,000-50,000[73] | LC[73] | ![]() | ||
| Fulvous owl | Strix fulvescens | 20,000-50,000[74] | LC[74] | ![]() | ||
| Great grey owl | Strix nebulosa | 50,000-99,999[75] | LC[75] | ![]() | ||
| Stygian owl | Asio stygius | 50,000-499,999[76] | LC[76] | ![]() | ||
| Pacific screech owl | Megascops cooperi | 50,000-499,999[77] | LC[77] | ![]() | ||
| Central American pygmy owl | Glaucidium griseiceps | 50,000-500,000[78] | LC[78] | ![]() | ||
| Guatemalan screech owl
(Middle American screech owl) |
Megascops guatemalae | 50,000-500,000[79] | LC[79] | Note that IOC taxonomy splits two additional species from this one: Chocó screech owl (M. centralis) and foothill screech owl (M. roraimae).[1]
IUCN/BirdLife International maintain all three species within M. guatemalae.[80] |
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| Arabian scops owl | Otus pamelae | 60,000[81] | LC[81] | ![]() | ||
| Elf owl | Micrathene whitneyi | 72,000[82] | LC[82] | ![]() | ||
| Western screech owl | Megascops kennicottii | 73,000-230,000[83] | LC[83] | ![]() | ||
| Northern hawk-owl | Surnia ulula | 100,000-499,999[84] | LC[84] | ![]() | ||
| Northern pygmy-owl
(Mountain pygmy-owl) |
Glaucidium gnoma | 180,000[85] | LC[85] | Note that IOC taxonomy splits three additional species from this one: the northern (G. californicum), Guatemalan (G. cobanense), and Baja (G. hoskinsii) pygmy-owls.[1]
IUCN/BirdLife International maintain all four species within G. gnoma.[80] |
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| Eurasian eagle-owl | Bubo bubo | 180,000-300,000[86] | LC[86] | ![]() | ||
| Whiskered screech owl | Megascops trichopsis | 200,000[87] | LC[87] | ![]() | ||
| Eurasian pygmy owl | Glaucidium passerinum | 471,000-894,000[88] | LC[88] | |||
| Striped owl | Asio clamator | 500,000-4,999,999[89] | LC[89] | ![]() | ||
| Tropical screech owl | Megascops choliba | 500,000-4,999,999[90] | LC[90] | ![]() | ||
| Mottled owl | Strix virgata | 500,000-4,999,999[91] | LC[91] | IUCN/BirdLife International place this species in genus Ciccaba. | ![]() | |
| Eastern screech owl | Megascops asio | 560,000[92] | LC[92] | ![]() | ||
| Ural owl | Strix uralensis | 640,000-1,052,000[93] | LC[93] | |||
| Boreal owl | Aegolius funereus | 730,000-1,810,000[94] | LC[94] | ![]() | ||
| Eurasian scops owl | Otus scops | 790,000-1,350,000[95] | LC[95] | |||
| Burrowing owl | Athene cunicularia | 1,000,000-9,999,999[96] | LC[96] | ![]() | ||
| Short-eared owl | Asio flammeus | 1,200,000-2,100,000[97] | LC[97] | ![]() | ||
| Tawny owl | Strix aluco | 1,580,000-2,340,000[98] | LC[98] | Note that IOC taxonomy splits an additional species, the Maghreb owl (S. mauritanica) from this one.[1]
IUCN/BirdLife International maintain both species within S. aluco.[80] |
![]() | |
| Common barn owl
(Western barn owl) |
Tyto alba | 1,960,000-3,240,000[99] | LC[99] | ?[99] | Note that IOC taxonomy splits three additional species from this one: American barn owl (T. furcata), Eastern barn owl (T. javanica), and Andaman masked owl (T. deroepstorffi).[1]
IUCN/BirdLife International maintain all four species within T. alba.[80] |
![]() |
| Northern saw-whet owl | Aegolius acadicus | 2,000,000[100] | LC[100] | ![]() | ||
| Long-eared owl | Asio otus | 2,200,000-3,700,000[101] | LC[101] | ![]() | ||
| Barred owl | Strix varia | 3,000,000-3,900,000[102] | LC[102] | Note that IOC taxonomy splits an additional species, the cinereous owl (S. sartorii) from this one.[1]
IUCN/BirdLife International maintain both species within S. varia.[80] |
![]() | |
| Little owl | Athene noctua | 5,000,000-9,999,999[103] | LC[103] | ![]() | ||
| Great horned owl | Bubo virginianus | 5,700,000[104] | LC[105] | IUCN/BirdLife International do not report a population estimate.[105]
Value given comes from Partners in Flight database.[104] |
![]() | |
| Ferruginous pygmy owl | Glaucidium brasilianum | 20,000,000[106] | LC[106] | ![]() | ||
Species without population estimates
See also
References
- 1 2 3 4 5 6 7 8 9 10 "Owls – IOC World Bird List". www.worldbirdnames.org. Retrieved 2026-01-09.
- ↑ BirdLife International (2022). "Aegolius gradyi". IUCN Red List of Threatened Species. 2022 e.T62184893A208118758. doi:10.2305/IUCN.UK.2022-1.RLTS.T62184893A208118758.en.
- ↑ BirdLife International (2024). "Ninox albifacies". IUCN Red List of Threatened Species. 2024 e.T22689496A246178545. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689496A246178545.en.
- ↑ BirdLife International (2024). "Mascarenotus sauzieri". IUCN Red List of Threatened Species. 2024 e.T22728861A262285773. doi:10.2305/IUCN.UK.2024-2.RLTS.T22728861A262285773.en.
- ↑ BirdLife International (2024). "Mascarenotus grucheti". IUCN Red List of Threatened Species. 2024 e.T22728866A262282497. doi:10.2305/IUCN.UK.2024-2.RLTS.T22728866A262282497.en.
- ↑ BirdLife International (2024). "Mascarenotus murivorus". IUCN Red List of Threatened Species. 2024 e.T22728856A262284504. doi:10.2305/IUCN.UK.2024-2.RLTS.T22728856A262284504.en.
- 1 2 3 4 BirdLife International (2019). "Glaucidium mooreorum". IUCN Red List of Threatened Species. 2019 e.T22733081A156084939. doi:10.2305/IUCN.UK.2019-3.RLTS.T22733081A156084939.en.
- 1 2 3 BirdLife International (2018). "Otus siaoensis". IUCN Red List of Threatened Species. 2018 e.T22728599A134199532. doi:10.2305/iucn.uk.2018-2.rlts.t22728599a134199532.en.
- 1 2 3 BirdLife International (2021). "Otus insularis". IUCN Red List of Threatened Species. 2021 e.T22688667A177971497. doi:10.2305/IUCN.UK.2021-3.RLTS.T22688667A177971497.en.
- 1 2 3 4 BirdLife International (2022). "Ninox natalis". IUCN Red List of Threatened Species. 2022 e.T22689452A157828703. doi:10.2305/IUCN.UK.2022-2.RLTS.T22689452A157828703.en.
- 1 2 3 BirdLife International (2018). "Heteroglaux blewitti". IUCN Red List of Threatened Species. 2018 e.T22689335A132251554. doi:10.2305/iucn.uk.2018-2.rlts.t22689335a132251554.en.
- 1 2 3 BirdLife International (2017). "Ninox spilonotus". IUCN Red List of Threatened Species. 2017 e.T22725493A118437516. doi:10.2305/IUCN.UK.2017-3.RLTS.T22725493A118437516.en.
- 1 2 3 BirdLife International. (2022). "Ninox rumseyi". IUCN Red List of Threatened Species. 2022 e.T22725505A208960267. doi:10.2305/IUCN.UK.2022-1.RLTS.T22725505A208960267.en.
- 1 2 3 4 BirdLife International (2018). "Otus hartlaubi". IUCN Red List of Threatened Species. 2018 e.T22688620A131460770. doi:10.2305/iucn.uk.2018-2.rlts.t22688620a131460770.en.
- 1 2 3 4 BirdLife International (2020). "Xenoglaux loweryi". IUCN Red List of Threatened Species. 2020 e.T22689320A180768478. doi:10.2305/iucn.uk.2020-3.rlts.t22689320a180768478.en.
- 1 2 3 4 BirdLife International. (2022). "Ninox leventisi". IUCN Red List of Threatened Species. 2022 e.T22725512A208503262. doi:10.2305/IUCN.UK.2022-1.RLTS.T22725512A208503262.en.
- 1 2 3 BirdLife International (2017). "Otus moheliensis". IUCN Red List of Threatened Species. 2017 e.T22724585A118472254. doi:10.2305/iucn.uk.2017-3.rlts.t22724585a118472254.en.
- 1 2 3 BirdLife International (2025). "Otus thilohoffmanni". IUCN Red List of Threatened Species. 2025 e.T22732040A223390270. doi:10.2305/IUCN.UK.2025-2.RLTS.T22732040A223390270.en.
- 1 2 3 BirdLife International (2023). "Ninox rotiensis". IUCN Red List of Threatened Species. 2023 e.T22725127A233595800. doi:10.2305/IUCN.UK.2023-1.RLTS.T22725127A233595800.en.
- 1 2 3 4 BirdLife International (2023). "Otus bikegila". IUCN Red List of Threatened Species. 2023 e.T230025085A231652448. doi:10.2305/IUCN.UK.2023-1.RLTS.T230025085A231652448.en.
- 1 2 3 4 BirdLife International (2025). "Bubo blakistoni". IUCN Red List of Threatened Species. 2025 e.T22689007A249243772. doi:10.2305/IUCN.UK.2025-2.RLTS.T22689007A249243772.en.
- 1 2 3 BirdLife International (2025). "Otus ireneae". IUCN Red List of Threatened Species. 2025 e.T22688565A259796531. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688565A259796531.en.
- 1 2 3 BirdLife International (2023). "Tyto soumagnei". IUCN Red List of Threatened Species. 2023 e.T22688493A231668509. doi:10.2305/IUCN.UK.2023-1.RLTS.T22688493A231668509.en.
- 1 2 3 4 BirdLife International (2018). "Bubo shelleyi". IUCN Red List of Threatened Species. 2018 e.T22688980A131104915. doi:10.2305/iucn.uk.2018-2.rlts.t22688980a131104915.en.
- 1 2 3 4 BirdLife International (2025). "Glaucidium nubicola". IUCN Red List of Threatened Species. 2025 e.T22724604A277306633. doi:10.2305/IUCN.UK.2025-2.RLTS.T22724604A277306633.en.
- 1 2 3 4 BirdLife International (2024). "Otus socotranus". IUCN Red List of Threatened Species. 2024 e.T61915715A263663996. doi:10.2305/IUCN.UK.2024-2.RLTS.T61915715A263663996.en.
- 1 2 3 BirdLife International. (2023). "Ninox burhani". IUCN Red List of Threatened Species. 2023 e.T22732909A223348997. doi:10.2305/IUCN.UK.2023-1.RLTS.T22732909A223348997.en.
- 1 2 3 4 BirdLife International (2024). "Ninox strenua". IUCN Red List of Threatened Species. 2024 e.T22689389A254015323. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689389A254015323.en.
- 1 2 3 BirdLife International (2021). "Otus pauliani". IUCN Red List of Threatened Species. 2021 e.T22688694A179586821. doi:10.2305/iucn.uk.2021-3.rlts.t22688694a179586821.en.
- 1 2 3 BirdLife International (2017). "Otus capnodes". IUCN Red List of Threatened Species. 2017 e.T22688686A119090936. doi:10.2305/iucn.uk.2017-3.rlts.t22688686a119090936.en.
- 1 2 3 4 BirdLife International (2019). "Megascops gilesi". IUCN Red List of Threatened Species. 2019 e.T155254743A155254750. doi:10.2305/IUCN.UK.2019-3.RLTS.T155254743A155254750.en.
- ↑ Krabbe, Niels K. (2017). "A new species of Megascops (Strigidae) from the Sierra Nevada de Santa Marta, Colombia, with notes on voices of New World screech-owls" (PDF). Ornithologia Colombiana. 16: eA08.
- 1 2 3 BirdLife International (2025). "Otus pembaensis". IUCN Red List of Threatened Species. 2025 e.T22688679A208663317. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688679A208663317.en.
- 1 2 3 BirdLife International (2025). "Ninox reyi". IUCN Red List of Threatened Species. 2025 e.T22725499A271303919. doi:10.2305/IUCN.UK.2025-2.RLTS.T22725499A271303919.en.
- 1 2 3 BirdLife International. (2023). "Ninox malaitae". IUCN Red List of Threatened Species. 2023 e.T45449331A209059576. doi:10.2305/IUCN.UK.2023-1.RLTS.T45449331A209059576.en.
- 1 2 3 BirdLife International (2023). "Ninox roseoaxillaris". IUCN Red List of Threatened Species. 2023 e.T45449334A157834363. doi:10.2305/IUCN.UK.2023-1.RLTS.T45449334A157834363.en.
- 1 2 3 "Otus alfredi". IUCN Red List of Threatened Species. 2016. 2016. doi:10.2305/IUCN.UK.2016-3.RLTS.T22724396A94864662.en.
- 1 2 3 BirdLife International (2021). "Scotopelia ussheri". IUCN Red List of Threatened Species. 2021 e.T22689038A180213988. doi:10.2305/iucn.uk.2021-3.rlts.t22689038a180213988.en.
- 1 2 3 BirdLife International (2018). "Tyto aurantia". IUCN Red List of Threatened Species. 2018 e.T22688470A132059362. doi:10.2305/iucn.uk.2018-2.rlts.t22688470a132059362.en.
- 1 2 3 4 BirdLife International (2022). "Glaucidium albertinum". IUCN Red List of Threatened Species. 2022 e.T22689310A208604278. doi:10.2305/iucn.uk.2022-1.rlts.t22689310a208604278.en.
- 1 2 3 BirdLife International (2023). "Nesasio solomonensis". IUCN Red List of Threatened Species. 2023 e.T22689539A227316153. doi:10.2305/IUCN.UK.2023-1.RLTS.T22689539A227316153.en.
- 1 2 3 BirdLife International (2019). "Otus alius". IUCN Red List of Threatened Species. 2019 e.T22728447A152511952. doi:10.2305/IUCN.UK.2019-3.RLTS.T22728447A152511952.en.
- 1 2 3 BirdLife International (2025). "Otus angelinae". IUCN Red List of Threatened Species. 2025 e.T22688591A263556745. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688591A263556745.en.
- 1 2 3 BirdLife International (2017). "Otus jolandae". IUCN Red List of Threatened Species. 2017 e.T61786867A117002556. doi:10.2305/IUCN.UK.2017-3.RLTS.T61786867A117002556.en.
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- 1 2 3 BirdLife International (2025). "Jubula lettii". IUCN Red List of Threatened Species. 2025 e.T22689173A259543993. doi:10.2305/IUCN.UK.2025-2.RLTS.T22689173A259543993.en.
- 1 2 3 BirdLife International (2025). "Bubo coromandus". IUCN Red List of Threatened Species. 2025 e.T22688992A280969765. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688992A280969765.en.
- 1 2 3 BirdLife International (2018). "Ketupa flavipes". IUCN Red List of Threatened Species. 2018 e.T22689017A130157883. doi:10.2305/IUCN.UK.2018-2.RLTS.T22689017A130157883.en.
- 1 2 3 BirdLife International (2024). "Ketupa ketupu". IUCN Red List of Threatened Species. 2024 e.T22689024A263602946. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689024A263602946.en.
- 1 2 3 BirdLife International (2024). "Bubo lacteus". IUCN Red List of Threatened Species. 2024 e.T22688986A264041652. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688986A264041652.en.
- 1 2 3 BirdLife International (2018). "Bubo leucostictus". IUCN Red List of Threatened Species. 2018 e.T22688996A130156693. doi:10.2305/IUCN.UK.2018-2.RLTS.T22688996A130156693.en.
- 1 2 3 BirdLife International (2018). "Bubo nipalensis". IUCN Red List of Threatened Species. 2018 e.T22688970A130156069. doi:10.2305/IUCN.UK.2018-2.RLTS.T22688970A130156069.en.
- 1 2 3 BirdLife International (2024). "Bubo poensis". IUCN Red List of Threatened Species. 2024 e.T22730030A263958348. doi:10.2305/IUCN.UK.2024-2.RLTS.T22730030A263958348.en.
- 1 2 3 BirdLife International (2025). "Ketupa zeylonensis". IUCN Red List of Threatened Species. 2025 e.T22689012A280908856. doi:10.2305/IUCN.UK.2025-2.RLTS.T22689012A280908856.en.
- 1 2 3 BirdLife International (2018). "Lophostrix cristata". IUCN Red List of Threatened Species. 2018 e.T22689177A130160501. doi:10.2305/iucn.uk.2018-2.rlts.t22689177a130160501.en.
- 1 2 3 BirdLife International (2024). "Margarobyas lawrencii". IUCN Red List of Threatened Species. 2024 e.T22688883A264050848. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688883A264050848.en.
- 1 2 3 BirdLife International (2024). "Megascops albogularis". IUCN Red List of Threatened Species. 2024 e.T22688903A264063374. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688903A264063374.en.
- 1 2 3 BirdLife International (2024). "Megascops atricapilla". IUCN Red List of Threatened Species. 2024 e.T22731897A264050139. doi:10.2305/IUCN.UK.2024-2.RLTS.T22731897A264050139.en.
- 1 2 3 BirdLife International (2024). "Megascops hoyi". IUCN Red List of Threatened Species. 2024 e.T22733712A264110810. doi:10.2305/IUCN.UK.2024-2.RLTS.T22733712A264110810.en.
- 1 2 3 BirdLife International (2023). "Megascops ingens". IUCN Red List of Threatened Species. 2023 e.T232594776A232861395. doi:10.2305/IUCN.UK.2023-1.RLTS.T232594776A232861395.en.
- ↑ "Treat Megascops colombianus as a subspecies of M. ingens". www.museum.lsu.edu. Retrieved 2026-01-10.
- 1 2 3 BirdLife International (2024). "Megascops koepckeae". IUCN Red List of Threatened Species. 2024 e.T22688782A264033553. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688782A264033553.en.
- 1 2 3 BirdLife International (2025). "Megascops marshalli". IUCN Red List of Threatened Species. 2025 e.T22688847A277487152. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688847A277487152.en.
- 1 2 3 BirdLife International (2025). "Megascops pertersoni". IUCN Red List of Threatened Species. 2025 e.T22688840A281019849. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688840A281019849.en.
- 1 2 3 BirdLife International (2025). "Megascops roboratus". IUCN Red List of Threatened Species. 2025 e.T22688790A281025176. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688790A281025176.en.
- 1 2 3 BirdLife International (2024). "Megascops sanctaecatarinae". IUCN Red List of Threatened Species. 2024 e.T22688874A263664762. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688874A263664762.en.
- 1 2 3 BirdLife International (2018). "Megascops watsonii". IUCN Red List of Threatened Species. 2018 e.T22688856A130155655. doi:10.2305/IUCN.UK.2018-2.RLTS.T22688856A130155655.en.
- 1 2 3 BirdLife International (2023). "BirdLife International. 2023. Ninox boobook". IUCN Red List of Threatened Species. 2023 e.T230075506A233533676. doi:10.2305/IUCN.UK.2023-1.RLTS.T230075506A233533676.en.
- 1 2 3 BirdLife International (2025). "Ninox connivens". IUCN Red List of Threatened Species. 2025 e.T22689394A281033875. doi:10.2305/IUCN.UK.2025-2.RLTS.T22689394A281033875.en.
- 1 2 3 BirdLife International (2023). "Ninox fusca". IUCN Red List of Threatened Species. 2023 e.T230084345A233564880. doi:10.2305/IUCN.UK.2023-1.RLTS.T230084345A233564880.en.
- 1 2 3 BirdLife International (2025). "Ninox hantu". IUCN Red List of Threatened Species. 2025 e.T22727909A280914772. doi:10.2305/IUCN.UK.2025-2.RLTS.T22727909A280914772.en.
- 1 2 3 BirdLife International (2024). "Ninox hypogramma". IUCN Red List of Threatened Species. 2024 e.T22727900A264040202. doi:10.2305/IUCN.UK.2024-2.RLTS.T22727900A264040202.en.
- 1 2 3 BirdLife International (2022). "Ninox ios". IUCN Red List of Threatened Species. 2022 e.T22728610A207662764. doi:10.2305/iucn.uk.2022-1.rlts.t22728610a207662764.en.
- 1 2 3 BirdLife International (2025). "Ninox japonica". IUCN Red List of Threatened Species. 2025 e.T22725653A209520163. doi:10.2305/IUCN.UK.2025-2.RLTS.T22725653A209520163.en.
- 1 2 3 BirdLife International (2024). "Ninox leucopsis". IUCN Red List of Threatened Species. 2024 e.T62023823A254015114. doi:10.2305/IUCN.UK.2024-2.RLTS.T62023823A254015114.en.
- 1 2 3 BirdLife International (2025). "Ninox meeki". IUCN Red List of Threatened Species. 2025 e.T22689465A264138651. doi:10.2305/IUCN.UK.2025-2.RLTS.T22689465A264138651.en.
- 1 2 3 BirdLife International (2025). "Ninox novaeseelandiae". IUCN Red List of Threatened Species. 2025 e.T62023843A281025369. doi:10.2305/IUCN.UK.2025-2.RLTS.T62023843A281025369.en.
- 1 2 3 BirdLife International (2024). "Ninox obscura". IUCN Red List of Threatened Species. 2024 e.T22726328A264142010. doi:10.2305/IUCN.UK.2024-2.RLTS.T22726328A264142010.en.
- 1 2 3 BirdLife International (2024). "Ninox philippensis". IUCN Red List of Threatened Species. 2024 e.T22725483A264104344. doi:10.2305/IUCN.UK.2024-2.RLTS.T22725483A264104344.en.
- 1 2 3 BirdLife International (2023). "Ninox plesseni". IUCN Red List of Threatened Species. 2023 e.T230087117A233595835. doi:10.2305/IUCN.UK.2023-1.RLTS.T230087117A233595835.en.
- 1 2 3 BirdLife International (2024). "Ninox punctulata". IUCN Red List of Threatened Species. 2024 e.T22689470A264140322. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689470A264140322.en.
- 1 2 3 BirdLife International (2024). "Ninox rufa". IUCN Red List of Threatened Species. 2024 e.T22689385A263729521. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689385A263729521.en.
- 1 2 3 BirdLife International (2021). "Ninox scutulata". IUCN Red List of Threatened Species. 2021 e.T22725643A200685229. doi:10.2305/IUCN.UK.2021-3.RLTS.T22725643A200685229.en.
- 1 2 3 BirdLife International (2024). "Ninox squamipila". IUCN Red List of Threatened Species. 2024 e.T22727893A264045886. doi:10.2305/IUCN.UK.2024-2.RLTS.T22727893A264045886.en.
- 1 2 3 BirdLife International (2024). "Ninox theomacha". IUCN Red List of Threatened Species. 2024 e.T22689460A264140871. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689460A264140871.en.
- 1 2 3 BirdLife International. (2018). "Ninox variegata". IUCN Red List of Threatened Species. 2018 e.T22689475A130164063. doi:10.2305/IUCN.UK.2018-2.RLTS.T22689475A130164063.en.
- 1 2 3 BirdLife International (2025). "Otus bakkamoena". IUCN Red List of Threatened Species. 2025 e.T61855263A280967185. doi:10.2305/IUCN.UK.2025-2.RLTS.T61855263A280967185.en.
- 1 2 3 BirdLife International (2017). "Otus balli". IUCN Red List of Threatened Species. 2017 e.T22688573A118257284. doi:10.2305/IUCN.UK.2017-3.RLTS.T22688573A118257284.en.
- 1 2 3 BirdLife International (2018). "Otus brookii". IUCN Red List of Threatened Species. 2018 e.T22688703A130155259. doi:10.2305/IUCN.UK.2018-2.RLTS.T22688703A130155259.en.
- 1 2 3 BirdLife International (2021). "Otus brucei". IUCN Red List of Threatened Species. 2021 e.T22688631A206478716. doi:10.2305/IUCN.UK.2021-3.RLTS.T22688631A206478716.en.
- 1 2 3 BirdLife International (2024). "Otus collari". IUCN Red List of Threatened Species. 2024 e.T22732046A263977201. doi:10.2305/IUCN.UK.2024-2.RLTS.T22732046A263977201.en.
- 1 2 3 BirdLife International (2024). "Otus everetti". IUCN Red List of Threatened Species. 2024 e.T22725053A263979727. doi:10.2305/IUCN.UK.2024-2.RLTS.T22725053A263979727.en.
- 1 2 3 BirdLife International (2024). "Otus icterorhynchus". IUCN Red List of Threatened Species. 2024 e.T22688559A264069616. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688559A264069616.en.
- 1 2 3 BirdLife International (2024). "Otus lempiji". IUCN Red List of Threatened Species. 2024 e.T61859106A264108562. doi:10.2305/IUCN.UK.2024-2.RLTS.T61859106A264108562.en.
- 1 2 3 BirdLife International. (2024). "Otus lettia". IUCN Red List of Threatened Species. 2024 e.T61855318A264055331. doi:10.2305/IUCN.UK.2024-2.RLTS.T61855318A264055331.en.
- 1 2 3 BirdLife International (2023). "Otus longicornis". IUCN Red List of Threatened Species. 2023 e.T22688602A231336941. doi:10.2305/IUCN.UK.2023-1.RLTS.T22688602A231336941.en.
- 1 2 3 BirdLife International (2022). "Otus magicus". IUCN Red List of Threatened Species. 2022 e.T219588044A219587839. doi:10.2305/IUCN.UK.2022-2.RLTS.T219588044A219587839.en.
- 1 2 3 BirdLife International (2022). "Otus manadensis". IUCN Red List of Threatened Species. 2022 e.T219587216A219587361. doi:10.2305/IUCN.UK.2022-2.RLTS.T219587216A219587361.en.
- 1 2 3 BirdLife International (2023). "Otus mantananensis". IUCN Red List of Threatened Species. 2023 e.T22688656A226893897. doi:10.2305/IUCN.UK.2023-1.RLTS.T22688656A226893897.en.
- 1 2 3 BirdLife International (2025). "Otus mayottensis". IUCN Red List of Threatened Species. 2025 e.T22732599A264067056. doi:10.2305/IUCN.UK.2025-2.RLTS.T22732599A264067056.en.
- 1 2 3 BirdLife International (2024). "Otus megalotis". IUCN Red List of Threatened Species. 2024 e.T22727655A264027154. doi:10.2305/IUCN.UK.2024-2.RLTS.T22727655A264027154.en.
- 1 2 3 BirdLife International (2023). "Otus mirus". IUCN Red List of Threatened Species. 2023 e.T22688614A231090375. doi:10.2305/IUCN.UK.2023-1.RLTS.T22688614A231090375.en.
- 1 2 3 BirdLife International (2025). "Pyrroglaux podargina". IUCN Red List of Threatened Species. 2025 e.T22688899A264063001. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688899A264063001.en.
- 1 2 3 BirdLife International (2025). "Otus rutilus". IUCN Red List of Threatened Species. 2025 e.T22735960A280951112. doi:10.2305/IUCN.UK.2025-2.RLTS.T22735960A280951112.en.
- 1 2 3 BirdLife International (2024). "Otus semitorques". IUCN Red List of Threatened Species. 2024 e.T61859151A264101116. doi:10.2305/IUCN.UK.2024-2.RLTS.T61859151A264101116.en.
- 1 2 3 BirdLife International (2025). "Otus senegalensis". IUCN Red List of Threatened Species. 2025 e.T279197053A279197497. doi:10.2305/IUCN.UK.2025-2.RLTS.T279197053A279197497.en.
- 1 2 3 BirdLife International (2024). "Otus silvicola". IUCN Red List of Threatened Species. 2024 e.T22688734A264096088. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688734A264096088.en.
- 1 2 3 BirdLife International (2024). "Otus spilocephalus". IUCN Red List of Threatened Species. 2024 e.T22688579A263677414. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688579A263677414.en.
- 1 2 3 BirdLife International (2021). "Otus sunia". IUCN Red List of Threatened Species. 2021 e.T22728969A206482277. doi:10.2305/IUCN.UK.2021-3.RLTS.T22728969A206482277.en.
- 1 2 3 BirdLife International (2024). "Otus tempestatis". IUCN Red List of Threatened Species. 2024 e.T45400982A264006592. doi:10.2305/IUCN.UK.2024-2.RLTS.T45400982A264006592.en.
- 1 2 3 BirdLife International (2023). "Otus umbra". IUCN Red List of Threatened Species. 2023 e.T22688586A229906969. doi:10.2305/IUCN.UK.2023-1.RLTS.T22688586A229906969.en.
- 1 2 3 BirdLife International (2024). "Phodilus assimilis". IUCN Red List of Threatened Species. 2024 e.T22725132A264136963. doi:10.2305/IUCN.UK.2024-2.RLTS.T22725132A264136963.en.
- 1 2 3 BirdLife International (2024). "Phodilus badius". IUCN Red List of Threatened Species. 2024 e.T22727641A263687739. doi:10.2305/IUCN.UK.2024-2.RLTS.T22727641A263687739.en.
- 1 2 3 BirdLife International (2025). "Pseudoscops grammicus". IUCN Red List of Threatened Species. 2025 e.T22689501A264146933. doi:10.2305/IUCN.UK.2025-2.RLTS.T22689501A264146933.en.
- 1 2 3 BirdLife International (2024). "Ptilopsis granti". IUCN Red List of Threatened Species. 2024 e.T61781923A263973977. doi:10.2305/IUCN.UK.2024-2.RLTS.T61781923A263973977.en.
- 1 2 3 BirdLife International (2024). "Ptilopsis leucotis". IUCN Red List of Threatened Species. 2024 e.T61781834A263992161. doi:10.2305/IUCN.UK.2024-2.RLTS.T61781834A263992161.en.
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- 1 2 3 BirdLife International (2018). "Pulsatrix melanota". IUCN Red List of Threatened Species. 2018 e.T22689183A130161594. doi:10.2305/IUCN.UK.2018-2.RLTS.T22689183A130161594.en.
- 1 2 3 BirdLife International (2018). "Pulsatrix perspicillata". IUCN Red List of Threatened Species. 2018 e.T22689180A130161018. doi:10.2305/iucn.uk.2018-2.rlts.t22689180a130161018.en.
- 1 2 3 BirdLife International (2018). "Scotopelia bouvieri". IUCN Red List of Threatened Species. 2018 e.T22689048A130158713. doi:10.2305/IUCN.UK.2018-2.RLTS.T22689048A130158713.en.
- 1 2 3 BirdLife International (2018). "Scotopelia peli". IUCN Red List of Threatened Species. 2018 e.T22689032A130158217. doi:10.2305/IUCN.UK.2018-2.RLTS.T22689032A130158217.en.
- 1 2 3 BirdLife International (2018). "Ciccaba albitarsis". IUCN Red List of Threatened Species. 2018 e.T22689154A130160167. doi:10.2305/IUCN.UK.2018-2.RLTS.T22689154A130160167.en.
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- 1 2 3 BirdLife International. (2024). "Strix hadorami". IUCN Red List of Threatened Species. 2024 e.T22689083A263595470. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689083A263595470.en.
- 1 2 3 BirdLife International (2024). "Ciccaba huhula". IUCN Red List of Threatened Species. 2024 e.T22689144A263994498. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689144A263994498.en.
- 1 2 3 BirdLife International (2022). "Strix hylophila". IUCN Red List of Threatened Species. 2022 e.T22689100A209094614. doi:10.2305/IUCN.UK.2022-1.RLTS.T22689100A209094614.en.
- 1 2 3 BirdLife International (2024). "Strix leptogrammica". IUCN Red List of Threatened Species. 2024 e.T22689071A263957894. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689071A263957894.en.
- 1 2 3 BirdLife International (2024). "Strix ocellata". IUCN Red List of Threatened Species. 2024 e.T22689066A263957499. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689066A263957499.en.
- 1 2 3 BirdLife International (2018). "Ciccaba nigrolineata". IUCN Red List of Threatened Species. 2018 e.T22689133A130159025. doi:10.2305/iucn.uk.2018-2.rlts.t22689133a130159025.en.
- 1 2 3 BirdLife International (2024). "Strix nivicolum". IUCN Red List of Threatened Species. 2024 e.T22725477A264106602. doi:10.2305/IUCN.UK.2024-2.RLTS.T22725477A264106602.en.
- 1 2 3 BirdLife International (2024). "Strix rufipes". IUCN Red List of Threatened Species. 2024 e.T22733923A263666034. doi:10.2305/IUCN.UK.2024-2.RLTS.T22733923A263666034.en.
- 1 2 3 BirdLife International (2025). "Strix seloputo". IUCN Red List of Threatened Species. 2025 e.T22689061A280900807. doi:10.2305/IUCN.UK.2025-2.RLTS.T22689061A280900807.en.
- 1 2 3 BirdLife International (2024). "Strix woodfordii". IUCN Red List of Threatened Species. 2024 e.T22689166A264003289. doi:10.2305/IUCN.UK.2024-2.RLTS.T22689166A264003289.en.
- 1 2 3 BirdLife International (2021). "Glaucidium sylvaticum". IUCN Red List of Threatened Species. 2021 e.T200290450A206270258. doi:10.2305/IUCN.UK.2021-3.RLTS.T200290450A206270258.en.
- 1 2 3 BirdLife International (2025). "Tyto capensis". IUCN Red List of Threatened Species. 2025 e.T22688514A280917549. doi:10.2305/IUCN.UK.2025-2.RLTS.T22688514A280917549.en.
- 1 2 3 BirdLife International (2024). "Tyto glaucops". IUCN Red List of Threatened Species. 2024 e.T22688511A264080536. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688511A264080536.en.
- 1 2 3 BirdLife International (2023). "Tyto inexspectata". IUCN Red List of Threatened Species. 2023 e.T22688441A230036968. doi:10.2305/IUCN.UK.2023-1.RLTS.T22688441A230036968.en.
- 1 2 3 BirdLife International (2024). "Tyto longimembris". IUCN Red List of Threatened Species. 2024 e.T22688522A263684657. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688522A263684657.en.
- 1 2 3 BirdLife International (2023). "Tyto novaehollandiae". IUCN Red List of Threatened Species. 2023 e.T230023167A230808865. doi:10.2305/IUCN.UK.2023-1.RLTS.T230023167A230808865.en.
- 1 2 3 BirdLife International (2024). "Tyto rosenbergii". IUCN Red List of Threatened Species. 2024 e.T22688489A263680565. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688489A263680565.en.
- 1 2 3 BirdLife International (2024). "Tyto tenebricosa". IUCN Red List of Threatened Species. 2024 e.T22688429A264144178. doi:10.2305/IUCN.UK.2024-2.RLTS.T22688429A264144178.en.
- 1 2 3 BirdLife International (2017). "Uroglaux dimorpha". IUCN Red List of Threatened Species. 2017 e.T22689490A118392665. doi:10.2305/IUCN.UK.2017-3.RLTS.T22689490A118392665.en.



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