Boreal Owl vs Eurasian Eagle-Owl
Aegolius funereus compared with Bubo bubo
Side-by-Side Comparison
| Attribute | Boreal Owl | Eurasian Eagle-Owl |
|---|---|---|
| Scientific Name | Aegolius funereus | Bubo bubo |
| Order | Strigiformes | Strigiformes |
| Family | Strigidae | Strigidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | 68.0 cm (26.8 in) |
| Wingspan | 33.8 cm (13.3 in) | 170.0 cm (66.9 in) |
| Weight | 137.75 g (4.86 oz) | 2800.0 g (98.77 oz) |
| Diet | -- | Mammals up to the size of hares and young foxes, and birds up to the … |
| Clutch Size | 3-6 | 2-4 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Eurasian Eagle-Owl
Rocky landscapes, cliffs, gorges, and open forest across Eurasia. Increasingly found near human settlements.
Song & Call Comparison
Boreal Owl
Eurasian Eagle-Owl
Powerful, resonant 'ooo-hu' duetting with mate across great distances at dusk. One of Europe's deepest owl calls. Also gives barking screams, hisses, and grunts at the nest.
Geographic Range & Migration
Boreal Owl
Eurasian Eagle-Owl
Widespread across Europe, Asia, and North Africa. The most widely distributed eagle-owl.
Conservation Status
Boreal Owl
Eurasian Eagle-Owl
How to Tell Them Apart
Boreal Owl
Eurasian Eagle-Owl
Tawny-brown plumage heavily mottled and streaked with black. Large prominent orange eyes and long ear tufts. Streaked breast and barred belly.
Powerful, dark grey-black hooked bill
About These Birds
Boreal Owl
The Boreal Owl (<em>Aegolius funereus</em>) is a small owl belonging to the family Strigidae (True Owls). It inhabits forest environments, where it relies on dense coniferous and mixed woodland cover for shelter and foraging. Detailed plumage and behavioral descriptions of this species are limited in the available literature. The Boreal Owl nests in cavities (nest type CV), making use of natural tree hollows or abandoned woodpecker holes. Incubation lasts approximately 29 days, and fledging occurs between 28 and 36 days …
Eurasian Eagle-Owl
The Eurasian eagle-owl is one of the largest owl species in the world, with females sometimes reaching a wingspan of nearly two meters. Its deep booming call can be heard up to four kilometers away on calm nights. These apex predators sit at the top of the avian food chain, preying on other raptors including buzzards and smaller owls.