Black-legged Kittiwake vs Buckelwal

Rissa tridactyla compared with Megaptera novaeangliae

Key Differences

• Black-legged Kittiwake is Endangered while Buckelwal is Vulnerable.

Taxonomic Classification

Rank	Black-legged Kittiwake	Buckelwal
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class	Aves (chim)	Mammalia (lớp Thú)
Order	Charadriiformes (Bộ Choi choi)	Cetacea (Whales & Dolphins)
Family	Laridae	Balaenopteridae (Rorquals)
Genus	Rissa	Megaptera (Humpback Whales)
Species	Rissa tridactyla	Megaptera novaeangliae

Evolutionary Relationship

Black-legged Kittiwake and Buckelwal share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Black-legged Kittiwake

EN — Endangered

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Black-legged Kittiwake	Buckelwal
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	15.0 m
Average Weight	—	30.0 t

Habitat & Geographic Range

Black-legged Kittiwake

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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.

Black-legged Kittiwake

Black-legged Kittiwake (Rissa tridactyla) 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.

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 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇹🇼 Taiwan 🇻🇪 Venezuela