The Eagle Owl is a large and powerful bird, slightly smaller than the Golden Eagle. It is the largest species of owl with a wingspan of up to 200 cm. Adult females can weigh in excess of 4 kg (9 lb), in comparison the common Barn Owl weighs about 500 grams (1.1 lb). It mainly feeds on small mammals, but can kill prey up to the size of foxes and young deer (up to 10 kg/22 lb), if taken by surprise. Larger prey (over 3 kg/7 lb) is consumed on the ground which leaves the bird vulnerable (for example to other foxes). It will also take on other birds including birds of prey.

The call of the Eagle Owl is a deep resonant “ooh-hu” with emphasis on the first syllable for the male, and a more high-pitched uh-Hu for the female (in German, the name of this bird is "Uhu"). Each member of an Eagle Owl population can be identified by means of its vocalizations.

The size, ear tufts and orange eyes make this a distinctive species. It has a strong direct flight. The difference between the male and female is that male's ear tufts are more upright than the female's.
- Wikipedia