Eurasian eagle-owl
One of the largest and most widely distributed owl species.
The Eurasian eagle-owl (Bubo bubo) is a large species of owl found across much of Eurasia, often simply called the eagle-owl in Europe and Asia. It is among the larger birds of prey, smaller than the golden eagle but larger than the snowy owl, though some overlap in size occurs. Females can reach a total length of 75 cm with a wingspan of 188 cm, while males are slightly smaller. Females weigh from 1.75 to 4.6 kg and males from 1.2 to 3.2 kg. The species has distinctive ear tufts, with upper parts mottled in darker blackish and tawny hues. The wings and tail are barred, and the underparts are buff with darker streaks. The facial disc is not very defined, and the eyes are orange. At least 12 subspecies are described, with plumage varying from brown-black to tawny-buff to pale creamy gray. The species inhabits mountainous and rocky areas, often near woodland edges, shrubby openings, or wetlands, as well as coniferous forests, steppes, and remote regions. It occasionally appears in farmland and park-like city settings, rarely in busier urban areas. Mostly nocturnal, it hunts small mammals such as rodents and rabbits, along with birds and larger mammals; secondary prey includes reptiles, amphibians, fish, large insects, and invertebrates. Breeding occurs on cliff ledges, in gullies, or among rocks. The nest is a scrape holding a clutch of 2–4 eggs, laid at intervals and hatching at different times. The female incubates and broods, while the male brings food; both parents care for the young for about five months. The IUCN lists the conservation status as least concern, though the trend is decreasing. The total range spans about 51.4 million km² across Europe and Asia, with an estimated population of 100,000 to 500,000 individuals. Most live in Continental Europe, Scandinavia, Russia, and Central Asia, with minor populations in Anatolia, the northern Middle East, montane South Asia, China, Korea, and Japan. An estimated 12 to 40 pairs reside in the United Kingdom as of 2016, where they are arguably non-native and have bred since at least 1996. Tame eagle-owls have occasionally been used in pest control to deter large birds like gulls.
- Scientific name
- Bubo bubo
- Total length
- 56–75 cm (22–30 in)
- Weight (female)
- 1.75–4.6 kg (3.9–10.1 lb)
- Weight (male)
- 1.2–3.2 kg (2.6–7.1 lb)
- Conservation status
- Least concern (decreasing trend)
- Number of subspecies
- At least 12 described
Quick Facts
- Genus
- Bubo
- Subdivision
- See text.
- Audio
- BuboBuboMariankaSlovakia2012.ogg
- Audio Caption
- Territorial call of male, recorded near Marianka, Slovakia
Facts from the source article.
Lore & Background
The Eurasian eagle-owl is one of the largest owl species, with females reaching up to 75 cm in length and a wingspan of 188 cm, while males are slightly smaller. Its most distinctive features are prominent ear tufts and vivid orange eyes. The upperparts are mottled with blackish and tawny coloring, while the wings and tail display barred patterns. The underparts are a variably hued buff, streaked with darker markings, and the facial disc is not sharply defined. At least 12 subspecies are recognized, showing considerable variation in plumage, from brown-black to pale creamy gray, with dense freckling on the forehead and stripes on the neck. A narrow buff band often runs above the eye along the inner edge of the ear tufts. The facial disc is tawny-buff, speckled with black-brown, forming a darker frame around the face. The chin and throat are white with a brownish central streak. This species inhabits a wide range of environments across Eurasia, favoring mountainous and rocky areas near woodland edges, shrubby openings, or wetlands. It also occurs in coniferous forests, steppes, and remote regions, and occasionally in farmland or park-like urban settings, though busy city centers are very rarely used.
Reader's Guide
The Eurasian eagle-owl is significant as one of the largest living owl species, comparable in size to Blakiston's fish owl and the great grey owl, though it can weigh well more than twice as much as the largest great grey owl. Its wings are reportedly the smallest in proportion to body weight of any European owl, giving it high wing loading. The species exhibits considerable plumage variation across its many subspecies, with upper parts ranging from brown-black to tawny-buff to pale creamy gray, and orange eyes that are distinctive. Its talons are very large and not often exceeded in size by diurnal raptors. The eagle-owl inhabits mountainous and rocky areas, coniferous forests, steppes, and occasionally farmland and park-like settings in cities. Tame individuals have been used in pest control to deter large birds such as gulls from nesting.
Did You Know?
- The Eurasian eagle-owl has a total range of about 51.4 million km² (19.8 million sq mi).
- Its wings are reportedly the smallest in proportion to body weight of any European owl.
- Tame eagle-owls have occasionally been used in pest control to deter large birds such as gulls.
Frequently Asked Questions
Who is the Eurasian eagle-owl?
The Eurasian eagle-owl (Bubo bubo) is a large owl species native to much of Eurasia, and in Europe and Asia it is often simply referred to as "the eagle-owl."
How big is the Eurasian eagle-owl?
It measures roughly 56–75 cm in total length and ranks among the largest owls in the world. Females can reach about 4.6 kg while males top out near 3.2 kg, showing a clear size gap between the sexes.
Where does the Eurasian eagle-owl live?
It enjoys one of the broadest ranges of any owl species, occurring across a vast stretch of Eurasia. At least twelve subspecies have been described, reflecting how widely it has spread and adapted.
What is the Eurasian eagle-owl's conservation status?
The IUCN currently lists it as least concern, meaning it is not at immediate risk of extinction. However, the overall population trend is flagged as decreasing, so long-term monitoring remains important.
Why is the Eurasian eagle-owl considered notable?
Its combination of large body size, enormous geographic spread, and the high number of recognized subspecies makes it a standout species in the owl family. For birdwatchers and ornithologists, it is one of the most recognizable and widely encountered large owls on two continents.
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