Lesser Noctule vs Long-eared Owl

Nyctalus leisleri compared with Asio otus

Key Differences

• Lesser Noctule is Endangered while Long-eared Owl is Data Deficient.

Taxonomic Classification

Rank	Lesser Noctule	Long-eared Owl
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Chiroptera (Bats)	Strigiformes (Owls)
Family	Vespertilionidae	Strigidae (True Owls)
Genus	Nyctalus	Asio
Species	Nyctalus leisleri	Asio otus

Evolutionary Relationship

Lesser Noctule and Long-eared Owl share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Lesser Noctule

EN — Endangered

Long-eared Owl

DD — Data Deficient

Physical Characteristics

Attribute	Lesser Noctule	Long-eared Owl
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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).

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.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden