Strix aluco
Tawny Owl
The Tawny Owl is a medium-sized owl with a robust build. Its plumage is mottled brown and grey, providing excellent camouflage against tree bark. The bird has a large, rounded head with dark eyes and no ear tufts. The facial disc is pale, almost off white.
Females are generally larger and heavier than males, but plumage is similar between the sexes. Juveniles resemble adults but have a more fluffy appearance and may show slightly paler markings.
Two colour morphs exist, grey or brown.
Length
37cm to 43cm
Wingspan
94cm to 104cm
Weight
330g to 590g
Males and females have similar plumage
Primary Colour
Brown Grey
Secondary Colour
White Black
Beak Colour
Grey Yellow
Leg Colour
Grey
Woodland
Garden
Wetland
Coastal
Urban
Farmland
Grassland
Desert
Tundra
Rainforest
Mountain
Savanna
Tawny Owls inhabit a wide range of wooded habitats, including deciduous and mixed forests, parks, and large gardens. They are found across much of Europe and parts of Asia, extending from the UK to western Siberia and Iran.
In the UK, Tawny Owls are widespread and common, absent only from Ireland and some Scottish islands. They are non-migratory, maintaining their territories year-round.
Up to 2,350 meters
Temperate, Mediterranean
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Tawny Owls are mostly carnivorous, opportunistic predators, primarily feeding on small mammals such as voles, mice, and shrews. They also consume birds, amphibians, snails, beetles, worms, and large insects.
These owls swallow their prey whole, later regurgitating pellets containing indigestible parts. Hunting occurs at night, when they glide silently over their territory or stand motionless on a favourite perch, watching and listening for their next meal.
Tawny Owls are strictly nocturnal, roosting during the day in dense foliage or tree cavities. They are highly territorial, with pairs defending their territory year-round. These owls hunt from perches, swooping down silently to catch prey on the ground or in mid-air.
Remember that Tawny Owls can be very aggressive, particularly during the breeding season. They will often attack unsuspecting creatures, including humans, that they consider a danger to themselves or their offspring, so take care and avoid the immediate vicinity of nests.
The Tawny Owl's call is one of the most recognisable owl sounds in Europe. The male's hooting call is a resonant 'hoo-hoo-ooo', often answered by the female's sharper 'kee-wick'. During courtship, pairs may engage in duets, with the male hooting and the female responding.
This has often been interpreted as a ‘ta-wit ta-woo’ sound where, in fact, the female’s ‘kew – wick’ sound is made first (‘ta-wit’) followed by the male’s response of ‘hooo’ (erroneously described as being ‘ta-woo’).
This archetypal owl noise is often used in films to create a spooky atmosphere at night, and it has come to epitomise the genre even though the Tawny Owl may not be a resident of many of the portrayed locations.
Tawny Owls form monogamous pairs and typically breed once a year. The breeding season usually begins in February or March in the UK.
These owls nest in tree cavities, old crow nests, or large nest boxes. The female lays 2-4 white, round eggs, which she incubates for about 30 days while the male provides food.
Chicks fledge after 32-37 days but remain dependent on their parents for several months. Young owls disperse in autumn to establish their own territories.
The Tawny Owl typically lives for 5 years, with a maximum recorded lifespan of 22.4 years.
Like all birds, lifespan can be affected by factors including predation, habitat quality, disease, and access to food sources.
While the Tawny Owl is listed as Least Concern globally, it faces localised threats from habitat loss and fragmentation.
In the UK, conservation efforts focus on maintaining mature woodlands and providing nest boxes to supplement natural cavities.
Brown Owl
Adult Tawny Owls have few natural predators, but nestlings and fledglings may fall prey to pine martens, goshawks, and eagle owls.
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website: BirdLife International. 2016. Strix aluco. The IUCN Red List of Threatened Species 2016: e.T22725469A86871093.
View sourcewebsite, 2010: Fransson et al., EURING list of longevity records for European birds
View source