Eagle Owls have various hunting techniques, and will take prey on the ground or in full flight. They may hunt in forests, but they prefer open spaces.

Eagle Owls will eat almost anything the moves; from beetles to roe deer fawns. The major part of their diet consists of mammals (voles, rats, mice, foxes, hares, etc.), but birds of all kinds are also taken, including crows, ducks, grouse, seabirds, and even other birds of prey (including other owls). Other prey taken includes snakes, lizards, frogs, fish, and crabs.