List of Strigiformes by population

The population of birds
Lists Anseriformes (waterfowl) Apodiformes (swifts and hummingbirds) Caprimulgiformes (nightjars and relatives) Charadriiformes (gulls and relatives) Ciconiiformes (storks and relatives) Columbiformes (doves and pigeons) Coraciiformes (kingfishers and relatives) Cuculiformes (cuckoos and relatives) Falconiformes (falcons and relatives) Galliformes (gamebirds) Gaviiformes (loons or divers) Gruiformes (cranes and relatives) Passeriformes (perching birds) Pelecaniformes (pelicans and relatives) Phoenicopteriformes (flamingos) Piciformes (woodpeckers and relatives) Podicipediformes (grebes) Procellariiformes (albatrosses and petrels) Psittaciformes (parrots) Sphenisciformes (penguins) Strigiformes (owls) Struthioniformes (ratites) Tinamiformes (tinamous) Trogoniformes (trogons and quetzals)
Key Conservation status   Extinct in the wild (EW)   Critically endangered (CR)   Endangered (EN)   Vulnerable (VU)   Near threatened (NT)   Least concern (LC)   Data deficient (DD)
Related Lists of organisms by population Lists of mammals by population Late Quaternary prehistoric birds List of extinct birds Lists of birds by region

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.

This list is not comprehensive, as not all Strigiformes have had their numbers quantified.

Species by global population

Common name	Binomial name	Population	Status	Trend	Notes	Image
Pernambuco pygmy owl	Glaucidium mooreorum	50[1]	CR[1]	[1]	Maximum estimate; possibly extinct.[1]
Siau scops owl	Otus siaoensis	50[2]	CR[2]	Unknown[2]	Maximum estimate; possibly extinct.[2]
Anjouan scops owl	Otus capnodes	70 – 400[3]	CR[3]	[3]	Preliminary estimate.[3]
Forest owlet	Heteroglaux blewitti	70 – 400[4]	CR[4]	[4]
Serendib scops owl	Otus thilohoffmanni	250 – 999[5]	EN[5]	[5]
Long-whiskered owlet	Xenoglaux loweryi	350 – 1500[6]	EN[6]	[6]
Manus masked owl	Tyto manusi	350 – 1500[7]	VU[7]	[7]
São Tomé scops owl	Otus hartlaubi	350 – 1500[8]	VU[8]	[8]
Taliabu masked owl	Tyto nigrobrunnea	350 – 1500[9]	EN[9]	[9]
Moheli scops owl	Otus moheliensis	400[10]	CR[10]	[10]
Christmas boobook	Ninox natalis	1000[11]	VU[11]	[11]
Blakiston's fish owl	Ketupa blakistoni	1500 – 4000[12]	EN[12]	[12]	Preliminary estimate.[12]
Karthala scops owl	Otus pauliani	2000[13]	CR[13]	[13]
Cloud-forest pygmy owl	Glaucidium nubicola	2500 – 9999[14]	VU[14]	[14]
Javan scops owl	Otus angelinae	2500 – 9999[15]	VU[15]	[15]
Shelley's eagle-owl	Bubo shelleyi	2500 – 9999[16]	NT[16]	[16]
Togian boobook	Ninox burhani	2500 – 9999[17]	NT[17]	[17]
Usambara eagle-owl	Bubo vosseleri	2500 – 9999[18]	VU[18]	[18]
Powerful owl	Ninox strenua	3250 – 4230[19]	LC[19]	[19]
Albertine owlet	Glaucidium albertinum	3500 – 15 000[20]	VU[20]	[20]
Biak scops owl	Otus beccarii	3500 – 15 000[21]	EN[21]	[21]
Cinnabar boobook	Ninox ios	3500 – 15 000[22]	VU[22]	[22]
Congo bay owl	Phodilus prigoginei	3500 – 15 000[23]	EN[23]	[23]
Enggano scops owl	Otus enganensis	3500 – 15 000[24]	NT[24]	[24]	Preliminary estimate.[24]
Giant scops owl	Otus gurneyi	3500 – 15 000[25]	VU[25]	[25]	Preliminary estimate.[25]
Golden masked owl	Tyto aurantia	3500 – 15 000[26]	VU[26]	[26]
Minahassa masked owl	Tyto inexspectata	3500 – 15 000[27]	VU[27]	[27]
Philippine eagle-owl	Bubo philippensis	3500 – 15 000[28]	VU[28]	[28]	Preliminary estimate.[28]
Red owl	Tyto soumagnei	3500 – 15 000[29]	VU[29]	[29]
Rufous fishing owl	Scotopelia ussheri	3500 – 15 000[30]	VU[30]	[30]
Sokoke scops owl	Otus ireneae	3500 – 15 000[31]	EN[31]	[31]
White-fronted scops owl	Otus sagittatus	3500 – 15 000[32]	VU[32]	[32]
Pemba scops owl	Otus pembaensis	4500[33]	VU[33]	[33]	Preliminary estimate.[33]
Fearful owl	Nesasio solomonensis	6000[34]	VU[34]	[34]	Minimum estimate.[34]
Colombian screech owl	Megascops colombianus	10 000[35]	NT[35]	[35]	Preliminary minimum estimate.[35]
Mantanani scops owl	Otus mantananensis	10 000 – 19 999[36]	NT[36]	[36]
Sumba boobook	Ninox rudolfi	10 000 – 19 999[37]	NT[37]	[37]	Preliminary estimate.[37]
Spotted owl	Strix occidentalis	15 000[38]	NT[38]	[38]
Chestnut-backed owlet	Glaucidium castanonotum	15 000 – 30 000[39]	NT[39]	[39]	Preliminary estimate.[39]
Little Sumba hawk-owl	Ninox sumbaensis	15 000 – 30 000[40]	NT[40]	[40]	Preliminary estimate.[40]
Mentawai scops owl	Otus mentawi	15 000 – 30 000[41]	NT[41]	[41]	Preliminary estimate.[41]
Mindoro scops owl	Otus mindorensis	15 000 – 30 000[42]	NT[42]	[42]
New Britain boobook	Ninox odiosa	15 000 – 30 000[43]	VU[43]	[43]
Ochre-bellied boobook	Ninox ochracea	15 000 – 30 000[44]	NT[44]	[44]	Preliminary estimate.[44]
Palawan scops owl	Otus fuliginosus	15 000 – 30 000[45]	NT[45]	[45]
Balsas screech owl	Megascops seductus	20 000 – 49 999[46]	NT[46]	[46]
Bearded screech owl	Megascops barbarus	20 000 – 49 999[47]	VU[47]	[47]
Central American pygmy owl	Glaucidium griseiceps	20 000 – 49 999[48]	LC[48]	[48]
Colima pygmy owl	Glaucidium palmarum	20 000 – 49 999[49]	LC[49]	[49]
Fulvous owl	Strix fulvescens	20 000 – 49 999[50]	LC[50]	[50]
Pacific screech owl	Megascops cooperi	20 000 – 49 999[51]	LC[51]	[51]
Tamaulipas pygmy owl	Glaucidium sanchezi	20 000 – 49 999[52]	LC[52]	[52]
Unspotted saw-whet owl	Aegolius ridgwayi	20 000 – 49 999[53]	LC[53]	[53]
Black-and-white owl	Strix nigrolineata	50 000 – 499 999[54]	LC[54]	[54]
Crested owl	Lophostrix cristata	50 000 – 499 999[55]	LC[55]	[55]
Middle American screech owl	Megascops guatemalae	50 000 – 499 999[56]	LC[56]	[56]
Stygian owl	Asio stygius	50 000 – 499 999[57]	LC[57]	[57]
Great grey owl	Strix nebulosa	60 000[58]	LC[58]	[58]	Minimum estimate.[58]
Long-eared owl	Asio otus	120 000[59]	LC[59]	[59]
Northern hawk-owl	Surnia ulula	130 000[60]	LC[60]	[60]	Minimum estimate.[60]
Eurasian eagle-owl	Bubo bubo	250 000 – 2 500 000[61]	LC[61]	[61]	Preliminary estimate.[61]
Snowy owl	Bubo scandiaca	300 000[62]	LC[62]	[62]	Minimum estimate.[62]
Eurasian pygmy owl	Glaucidium passerinum	300 000 – 1 500 000[63]	LC[63]	[63]
Mottled owl	Strix virgata	500 000 – 4 999 999[64]	LC[64]	[64]
Spectacled owl	Pulsatrix perspicillata	500 000 – 4 999 999[65]	LC[65]	[65]
Striped owl	Pseudoscops clamator	500 000 – 4 999 999[66]	LC[66]	[66]
Eurasian scops owl	Otus scops	1 000 000 – 3 000 000[67]	LC[67]	[67]	Preliminary estimate.[67]
Boreal owl	Aegolius funereus	1 700 000[68]	LC[68]	[68]	Minimum estimate.[68]
Short-eared owl	Asio flammeus	2 000 000[69]	LC[69]	[69]	Minimum estimate.[69]
Tawny owl	Strix aluco	2 000 000 – 6 000 000[70]	LC[70]	[70]	Preliminary estimate.[70]
Little owl	Athene noctua	5 000 000 – 15 000 000[71]	LC[71]	[71]	Preliminary estimate.[71]

See also

• Lists of birds by population
• Lists of organisms by population

References