Big Brown Bat vs Fransenfledermaus

Eptesicus fuscus compared with Myotis nattereri

Key Differences

• Big Brown Bat is Least Concern while Fransenfledermaus is Critically Endangered.

Taxonomic Classification

Rank	Big Brown Bat	Fransenfledermaus
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Mammalia (Säugetiere)	Mammalia (Säugetiere)
Order same	Chiroptera (Fledertiere)	Chiroptera (Fledertiere)
Family same	Vespertilionidae	Vespertilionidae
Genus	Eptesicus	Myotis
Species	Eptesicus fuscus	Myotis nattereri

Evolutionary Relationship

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

Conservation Status

Big Brown Bat

LC — Least Concern

Fransenfledermaus

CR — Critically Endangered

Physical Characteristics

Attribute	Big Brown Bat	Fransenfledermaus
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.

Fransenfledermaus

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (6 countries). Currently classified as Critically 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