Big Brown Bat vs Chimney Swift

Eptesicus fuscus compared with Chaetura pelagica

Key Differences

• Big Brown Bat is Least Concern while Chimney Swift is Near Threatened.

Taxonomic Classification

Rank	Big Brown Bat	Chimney Swift
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Chiroptera (Bats)	Apodiformes (Apodiformes)
Family	Vespertilionidae	Apodidae
Genus	Eptesicus	Chaetura
Species	Eptesicus fuscus	Chaetura pelagica

Evolutionary Relationship

Big Brown Bat and Chimney Swift share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big Brown Bat

LC — Least Concern

Chimney Swift

NT — Near Threatened

Physical Characteristics

Attribute	Big Brown Bat	Chimney Swift
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.

Chimney Swift

Habitat

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

Range

Widely distributed across Europe (Norway, Sweden), North America (United States), and South America (Colombia, Ecuador, Venezuela). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Chimney Swift

Chimney Swift (Chaetura pelagica) 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 4 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇺🇸 United States 🇻🇪 Venezuela