Boreal Owl vs Lesser Noctule

Aegolius funereus compared with Nyctalus leisleri

Key Differences

• Boreal Owl is Least Concern while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Boreal Owl	Lesser Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Strigiformes (Owls)	Chiroptera (Bats)
Family	Strigidae (True Owls)	Vespertilionidae
Genus	Aegolius	Nyctalus
Species	Aegolius funereus	Nyctalus leisleri

Evolutionary Relationship

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

Conservation Status

Boreal Owl

LC — Least Concern

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Boreal Owl	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Boreal Owl

Habitat

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

Range

Found across Europe (6 countries) and North America (United States).

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.

Boreal Owl

The Boreal Owl (Aegolius funereus) is a species in the genus Aegolius. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇸🇪 Sweden 🇺🇦 Ukraine