Big Brown Bat vs Lesser Noctule

Eptesicus fuscus compared with Nyctalus leisleri

Key Differences

• Big Brown Bat is Least Concern while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Big Brown Bat	Lesser Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Chiroptera (Bats)	Chiroptera (Bats)
Family same	Vespertilionidae	Vespertilionidae
Genus	Eptesicus	Nyctalus
Species	Eptesicus fuscus	Nyctalus leisleri

Evolutionary Relationship

Big Brown Bat and Lesser Noctule share a common ancestor at the Family level: Vespertilionidae.

Conservation Status

Big Brown Bat

LC — Least Concern

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Big Brown Bat	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Brown Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Colombia, Ecuador, United States, and Venezuela.

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.

Big Brown Bat

The Big Brown Bat (Eptesicus fuscus) is a species in the genus Eptesicus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Shared Countries

Both species can be found in 1 countries:

🇧🇪 Belgium