Long-eared Owl

      Asio otus

      Information

      The deep, hooting mating calls of the Long-eared Owl, which are emitted at night in February and March, can only be heard at a short distance. Because of their bark-coloured plumage, the birds are difficult to spot during the day. It is mostly the all night long loud, high-pitched cheeping of the young owls that reveal the presence of the species. The ear-tufts, that give it its name, are merely extended head feathers.

      Voice

      Status (in CH)
      regular, scarce breeder, migrant and winter visitor
      Annual cycle
      The bar on the top line indicates during which seasons the species can be observed regularly in Switzerland. There can be great seasonal fluctuations of numbers. The middle bar indicates the typical migration seasons of a species. The bottom bar indicates the period during which the species normally breeds. As a rule it spans the period from egg-laying to fledging of the young.
      Annual cycle
      Annual cycle

      Facts

      Population size in Switzerland (Pairs)
      2'000 - 3'000 (2013-2016)
      Migration behaviour
      resident to short-distance migrant
      Diurnal/nocturnal migrant
      Nocturnal migrant
      Length (cm)
      35-37
      wing span (cm)
      90-100
      Weight (g)
      210-330
      Nest site
      trees
      Food
      small mammals, birds
      Group
      typical Owls
      Habitat
      farmland, forest
      Distribution
      Distribution
      Distribution