Buckelwal vs Bilou or Siamang Kerdil Mentawai

Megaptera novaeangliae compared with Hylobates klossii

Key Differences

• Buckelwal is Vulnerable while Bilou or Siamang Kerdil Mentawai is Endangered.

Taxonomic Classification

Rank	Buckelwal	Bilou or Siamang Kerdil Mentawai
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mamalia)	Mammalia (mamalia)
Order	Cetacea (Whales & Dolphins)	Primates (Primata)
Family	Balaenopteridae (Rorquals)	Hylobatidae
Genus	Megaptera (Humpback Whales)	Hylobates
Species	Megaptera novaeangliae	Hylobates klossii

Evolutionary Relationship

Buckelwal and Bilou or Siamang Kerdil Mentawai share a common ancestor at the Class level: Mammalia. (mamalia)

Conservation Status

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Bilou or Siamang Kerdil Mentawai

EN — Endangered

Physical Characteristics

Attribute	Buckelwal	Bilou or Siamang Kerdil Mentawai
Diet	Carnivore	—
Average Lifespan	50 years	—
Average Length	15.0 m	—
Average Weight	30.0 t	—

Habitat & Geographic Range

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.

Bilou or Siamang Kerdil Mentawai

Habitat

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.