Long-eared Owl vs small tortoiseshell

Asio otus compared with Aglais urticae

Key Differences

• Long-eared Owl is Data Deficient while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Long-eared Owl	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Strigiformes (Owls)	Lepidoptera (Butterflies & Moths)
Family	Strigidae (True Owls)	Nymphalidae (Brush-footed Butterflies)
Genus	Asio	Aglais
Species	Asio otus	Aglais urticae

Evolutionary Relationship

Long-eared Owl and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Long-eared Owl

DD — Data Deficient

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Long-eared Owl	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Long-eared Owl

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (5 countries) and North America (United States).

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Long-eared Owl

Long-eared Owl (Asio otus) is classified as Data Deficient (DD) on the IUCN Red List. Insufficient data available to assess extinction risk. Further research and field surveys are needed.

small tortoiseshell

small tortoiseshell (Aglais urticae) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇷🇺 Russia 🇸🇪 Sweden