Big Finner vs Hairy Big-eared Bat

Balaenoptera physalus compared with Micronycteris hirsuta

Key Differences

• Big Finner is Endangered while Hairy Big-eared Bat is Least Concern.

Taxonomic Classification

Rank	Big Finner	Hairy Big-eared Bat
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class same	Mammalia (lớp Thú)	Mammalia (lớp Thú)
Order	Cetacea (Whales & Dolphins)	Chiroptera (bộ Dơi)
Family	Balaenopteridae (Rorquals)	Phyllostomidae
Genus	Balaenoptera (Rorquals)	Micronycteris
Species	Balaenoptera physalus	Micronycteris hirsuta

Evolutionary Relationship

Big Finner and Hairy Big-eared Bat share a common ancestor at the Class level: Mammalia. (lớp Thú)

Conservation Status

Big Finner

EN — Endangered

Hairy Big-eared Bat

LC — Least Concern

Physical Characteristics

Attribute	Big Finner	Hairy Big-eared Bat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big Finner

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Hairy Big-eared Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Big Finner

Big Finner (Balaenoptera physalus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Shared Countries

Both species can be found in 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇻🇪 Venezuela