LC
Tawny Owl Strix aluco



Taxonomy

Taxonomic note
Strix aluco and S. nivicolum (del Hoyo and Collar 2014) were previously lumped as S. aluco following Sibley and Monroe (1990, 1993).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2014 Least Concern
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 23,300,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 1000000-2999999 poor estimated 2012
Population trend Stable suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 8 - - -

Population justification: In Europe, the breeding population is estimated to number 535,000-939,000 pairs, which equates to 1,070,000-1,880,000 mature individuals (BirdLife International 2015). Europe forms c. 80% of the global range, so a very preliminary estimate of the global population size is 1,400,000-2,400,000 mature individuals, although further validation of this estimate is needed. The population is therefore placed in the band 1,000,000-2,999,999 mature individuals.

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats. The European population trend is unknown (BirdLife International 2015).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Afghanistan N Extant Yes
Albania N Extant Yes
Algeria N Extant Yes
Andorra N Extant Yes
Armenia N Extant Yes
Austria N Extant Yes
Azerbaijan N Extant Yes
Belarus N Extant Yes
Belgium N Extant Yes
Bosnia and Herzegovina N Extant Yes
Bulgaria N Extant Yes
China (mainland) N Extant Yes
Croatia N Extant Yes
Czechia N Extant Yes
Denmark N Extant Yes
Estonia N Extant Yes
Finland N Extant Yes
France N Extant Yes
Georgia N Extant Yes
Germany N Extant Yes
Greece N Extant Yes
Hungary N Extant Yes
Iran, Islamic Republic of N Extant Yes
Iraq N Extant Yes
Israel N Extant Yes
Italy N Extant Yes
Jordan N Extant Yes
Kazakhstan N Extant Yes
Kyrgyzstan N Extant Yes
Latvia N Extant Yes
Lebanon N Extant Yes
Liechtenstein N Extant Yes
Lithuania N Extant Yes
Luxembourg N Extant Yes
Moldova N Extant Yes
Montenegro N Extant Yes
Morocco N Extant Yes
Netherlands N Extant Yes
North Macedonia N Extant Yes
Norway N Extant Yes
Pakistan N Extant Yes
Palestinian Authority Territories N Extant Yes
Poland N Extant Yes
Portugal N Extant Yes
Romania N Extant Yes
Russia N Extant Yes
Russia (Central Asian) N Extant Yes
Russia (European) N Extant Yes
Serbia N Extant Yes
Slovakia N Extant Yes
Slovenia N Extant Yes
Spain N Extant Yes
Sweden N Extant Yes
Switzerland N Extant Yes
Syria N Extant Yes
Tajikistan N Extant Yes
Tunisia N Extant Yes
Turkey N Extant Yes
Turkmenistan N Extant Yes
Ukraine N Extant Yes
United Kingdom N Extant Yes
Uzbekistan N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Czechia Trebonsko (Trebon region)
Serbia Bosutska forest
Serbia Subotica lakes and sandy terrain
Serbia Vršačke Planine
Serbia Fruska gora
Azerbaijan Alazani river valley
Azerbaijan Alty Agach area
Azerbaijan Akstafa-chai valley
Azerbaijan Astara-chai valley
Azerbaijan Mount Babadag
Azerbaijan Mount Bazar-Duzu
Azerbaijan Girkan forest
Azerbaijan Ilisu area
Azerbaijan Ismailly area
Azerbaijan Kusari (Gusari) area
Azerbaijan Shamkhor area
Azerbaijan Vilajchai valley
Belarus Biarezinski zapaviednik
Belarus Mid Prypiac'
Belarus Lower Pripyat
Belarus Sialiec
Belarus Vyhanaščanskija baloty
Belarus Bielaje fish farm
Belarus Sož floodplain
Belarus Al'manskija baloty
Bulgaria Central Balkan
Romania Mures river lower flood-plain
Romania Dobron forest
Slovenia Planina polje
Slovenia Ribnica valley
Slovenia Nanoščica river basin
Slovenia Julijci
Slovenia Kočevsko
Slovenia River Drava
Slovenia Goričko
Slovenia Krakovo forest and Šentjernej plain
Sweden Färnebofjärden
Sweden Lake Solgen
Sweden Sandemar
Poland Middle Warta River Valley
Poland Gorce mountains
Poland Bieszczady Mountains
Poland Bialowieza Forest
Poland Gródek-Michalowo basin
Poland Pisz forest
Poland Marshy valley of the Drweca river
Greece National Park of Dadia - Lefkimi - Soufli forest
Greece Porto Lagos, lake Vistonida and coastal lagoons
Greece Filiouri valley and eastern Rodopi mountains
Greece Kompsatos valley
Greece Nestos delta and coastal lagoons
Greece Nestos gorge
Greece Mount Menoikio
Greece Mount Beles (Kerkini)
Greece Mount Pangaio
Greece Mount Krousia (Mavrovouni and Dysoro)
Greece Mount Itamos
Greece Tzena and Pinovo mountains
Greece Mount Voras (Kaïmaktsalan)
Greece Mount Vourinos
Greece Mount Olympos
Greece Central Zagori and mount Mitsikeli
Greece Kato Olympos, Tempi gorge and mount Ossa
Greece Mount Mavrovouni, Larisa
Greece Acherontas gorge and estuary
Greece Amvrakikos gulf
Greece Acheloos valley
Greece Mesolongi and Aitoliko lagoons, Acheloos delta and Evinos estuary
Greece Mount Vardousia
Greece Mount Gkiona
Greece Mount Parnassos
Greece Mount Oiti
Greece Mount Othrys
Greece Mount Kantili
Greece Mount Ochi and surrounding marine area
Greece Barbas and Klokos mountains and Selinountas gorge
Greece Vouraïkos gorge and Kalavryta
Greece Lake Stymfalia
Greece Mount Taygetos
Greece Divari Pylou (Gialova) lagoon and Sfaktiria island
Greece Mount Parnitha
Greece Mounts Orliakas and Tsourgiakas
Greece Mount Peristeri
Greece Pineios delta
Greece Ikaria island
Greece Agrafa mountains
Greece Mount Kyllini (Ziria)
Greece Mount Chelmos (Aroania)
Greece Mount Erymanthos
Greece Mount Ymittos
Greece Mount Lepetymnos, Lesvos, and surrounding marine area
Greece South forest complex of Evros prefecture
Greece Dadia - Dereio - Aisymi forest
Finland Ruissalo
Finland Paimionlahti bay
Finland Köyliönjärvi and Pyhäjärvi lakes
Finland Koskeljärvi, Vaaljärvi and Pitkäjärvi lakes
Finland Pori archipelago and wetlands
Finland Hanko western archipelago
Finland Tammisaari and Inkoo western archipelago
Finland Nuuksio
Finland Porvoonjoki Delta
Finland Kirkon-Vilkkiläntura Bay
Finland Torronsuo and Lake Talpianjärvi
Finland Artjärvi wetlands
Finland Kangasala wetlands
Finland Lapväärti wetlands
Hungary Aggtelek Karst
Russia (European) Buzulukski forest
Russia (European) Flood-plain of Sura river
Russia (European) Lower Urushten river
Russia (European) Akhmet-Skala ridge
Russia (European) Kaluzhskiye Zaseki Nature Reserve
Spain Urdaibai - Matxitxako
Spain Alt Pallars
Spain Boumort mountains
Spain Mountains of Barcelona
Spain River Moros
Ukraine Carpathian Biosphere Reserve
Ukraine Shats'ki lakes
Ukraine Crimean Nature Reserve
Ukraine Cape Martiyan
Ukraine Dniprovs'ko-Oril's'kyj Nature Reserve
Ukraine Velykomykhailivskyj forest
Ukraine Samars'kyj forest
Ukraine Gorgany
Ukraine Carpathian Vulkanichnyj Mountains
Ukraine Orikhivski lake-system
France Montagne de la Serre
France Barrage d'Artix et Saligue du Gave de Pau
France Plaine des Maures
France Vallée de la Durance : de Tallard à Sisteron
France Vallée du Haut-Guil
France Bois des Ayes
France Marais de Sacy
Italy Antigorio and Formazza valleys
Italy Gran Paradiso
Italy Susa and Chisone valleys
Italy Mount Beigua
Italy Pian di Spagna and Lake Mezzola
Italy Orobie Alps and pre-Alps
Italy River Po: from Ticino mouth to Adda mouth
Italy River Po: from the mouth of Adda river to Ostiglia
Italy Stelvio National Park
Italy Tarvisio Forest
Italy Taro river
Italy Apennines from Passo del Cerreto to Monte Caligi
Italy Vico lake
Italy Lake Bracciano and surrounding areas
Italy Tolfa hills
Italy Ernici and Simbruini mountains
Italy Cicolano
Italy Alburni mountains
Italy Mount Cervati
Italy Ticino river
Italy Foreste Casentinesi
Italy Magredi of Pordenone
Czechia Krivoklatsko (Krivoklatsko region)
Georgia Eastern Caucasus
Georgia Iori Region
Serbia Cer mountain
Serbia Tara mountain
Slovakia Nízke Tatry
Slovakia Slanské hills
Slovakia Slovenský karst
Slovakia Syslovské fields
Slovakia Malé Karpaty
Slovakia Horna Orava
Slovakia Tríbec
Slovakia Muránska plateau and Stolicke hills
Serbia Sara mountain
Serbia Jerma
Austria North-eastern Leithagebirge
Austria Surroundings of Mattersburg
Austria Zoological Gardens of Lainz
Austria Lösslandschaft and Wagram east of Krems
Austria Southern Waldviertel
Austria Allentsteig military training area
Austria Western Waldviertel
Austria Niederösterreichische Randalpen
Austria Machland
Austria Freiwald
Austria Northern Kalkalpen
Austria Salzach valley
Austria Hohe Tauern National Park
Austria Kaisergebirge
Austria Slope forests in the Klostertal
Germany Wagbach lowlands
Germany Main valley near Volkach: Fahr-Dettelbach
Germany Ponds and Elbe valley near Torgau
Germany Rhön Biosphere Reserve
Germany Nürnberger Reichswald
Iran, Islamic Republic of Dasht-e Naz Wildlife Refuge
Iran, Islamic Republic of Golestan
Iran, Islamic Republic of Western Zagros north of Nowsud
Russia (European) Sources of Kuna and Shisha rivers
Belarus Liebiadziny Moch
Belarus Prypiackija baloty
Belarus Brycalavičskaja Pušča
Russia (European) Ichalkovski forest
Russia (European) Dono-Donetskoye flood-plain
Sweden Lake Lim
Italy River Po: from Ticino mouth to Boscone island
Ukraine National Park Stara Guta
Ukraine Vodorazdil'ni i Zovnishni Gorgany
Ukraine Krasnopols'kyj Forest
Ukraine Voloshans'ka dacha
Ukraine Komisarovskyj Forest
Ukraine Desna river part of National Nature Park "Desnyans'ko-Staroguts'kyj"
Estonia Kikepera
Estonia Haanja
Estonia Karula
Netherlands Veluwe
Estonia Koorunõmme
Estonia Irbe strait
Estonia Lahemaa
Estonia Luitemaa
Belarus Cieliachanski wood and mire complex
Serbia Goc-Zeljin
Serbia Valjevske mountains

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable resident
Artificial/Terrestrial Pastureland suitable resident
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Rural Gardens suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Artificial/Terrestrial Urban Areas suitable resident
Forest Boreal suitable resident
Forest Temperate suitable resident
Shrubland Boreal suitable resident
Shrubland Mediterranean-type Shrubby Vegetation suitable resident
Shrubland Temperate suitable resident
Altitude 0 - 2350 m Occasional altitudinal limits  

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - - International Non-trivial Recent

Recommended citation
BirdLife International (2020) Species factsheet: Strix aluco. Downloaded from http://www.birdlife.org on 05/07/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 05/07/2020.