Bidentate Yellow-shouldered Bat vs Buckelwal

Sturnira bidens compared with Megaptera novaeangliae

Key Differences

• Bidentate Yellow-shouldered Bat is Least Concern while Buckelwal is Vulnerable.

Taxonomic Classification

Rank	Bidentate Yellow-shouldered Bat	Buckelwal
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Chiroptera (ค้างคาว)	Cetacea (Whales & Dolphins)
Family	Phyllostomidae	Balaenopteridae (Rorquals)
Genus	Sturnira	Megaptera (Humpback Whales)
Species	Sturnira bidens	Megaptera novaeangliae

Evolutionary Relationship

Bidentate Yellow-shouldered Bat and Buckelwal share a common ancestor at the Class level: Mammalia. (สัตว์เลี้ยงลูกด้วยน้ำนม)

Conservation Status

Bidentate Yellow-shouldered Bat

LC — Least Concern

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Bidentate Yellow-shouldered Bat	Buckelwal
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	15.0 m
Average Weight	—	30.0 t

Habitat & Geographic Range

Bidentate Yellow-shouldered Bat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Buckelwal

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

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

Bidentate Yellow-shouldered Bat

The Bidentate Yellow-shouldered Bat (Sturnira bidens) is a species in the genus Sturnira. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Buckelwal

Among the most acrobatic of the great whales, humpback whales are renowned for their complex, haunting songs sung by males during breeding season — some lasting hours and evolving over time. Reaching 16 meters and 30 tonnes, they undertake the longest migrations of any mammal. Found in all oceans, humpbacks feed on krill and small fish using cooperative bubble-net feeding. Populations have largely recovered from historic whaling.

Shared Countries

Both species can be found in 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇻🇪 Venezuela