Asio otus (Linnaeus, 1758)

Synonyms: Asio vulgaris Fleming; Strix otus Linnaeus, 1758
Homonyms: Asio otus (Linnaeus, 1758)
Common names: Bufo-pequeno in Portugais; Bëscheil in Luxembourgeois; Búho Chico in Espagnol; Búho cara café in Espagnol; Búho cara café in Espagnol; Búho cara café in Espagnol; Búho chico in Espagnol; Erdei fülesbagoly in Hongrois; Gufo comune in Italien; Gufo comune in Italien; Hibou moyen-duc in Français; Hibou moyen-duc in Français; Hibou moyen-duc in Français; Hibou moyen-duc in Français; Hornuggla in Suédois; Hornugle in Norvégien; Huereil in Luxembourgeois; Kalous ušatý in Tchèque; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared Owl in Anglais; Long-eared/Short-eared Owl in Anglais; Long-eared/short-eared Owl in Anglais; Ransuil in Néerlandais; Ransuil in Néerlandais; Sarvipöllö in Finnois; Skovhornugle in Danois; Skovhornugle in Danois; Uszatka in Polonais; Waldohreule in Allemand; Waldohreule in Allemand; Waldohreule in Allemand; Waldohreule in Allemand; ausainā pūce in Letton; bufo-pequeno in Portugais; erdei fülesbagoly in Hongrois; hibou moyen-duc in Français; hibou moyen-duc in Français; hibou moyen-duc in Français; hornuggla in Suédois; kalous ušatý in Tchèque; kõrvukräts in Estonien; long-eared owl in Anglais

Avibase - the world bird database.
Banks, R. C., R. W. McDiarmid, and A. L. Gardner, 1987: Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79.
Gill, Frank, and Minturn Wright, 2006: null. Birds of the World: Recommended English Names. ix + 259.
SOF (1899-12-31 23:00:00) Holarktis Fåglar, version 2. SOF:s Taxonomikommittés officiella lista över Holarktis fåglar
SOF (2007) Holarktis Fåglar, version 2. SOF:s Taxonomikommittés officiella lista över Holarktis fåglar