Big Finner vs Kermadec Petrel

Balaenoptera physalus compared with Pterodroma neglecta

Key Differences

• Big Finner is Endangered while Kermadec Petrel is Least Concern.

Taxonomic Classification

Rank	Big Finner	Kermadec Petrel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Procellariiformes (Procellariiformes)
Family	Balaenopteridae (Rorquals)	Procellariidae
Genus	Balaenoptera (Rorquals)	Pterodroma
Species	Balaenoptera physalus	Pterodroma neglecta

Evolutionary Relationship

Big Finner and Kermadec Petrel share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big Finner

EN — Endangered

Kermadec Petrel

LC — Least Concern

Physical Characteristics

Attribute	Big Finner	Kermadec Petrel
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.

Kermadec Petrel

Habitat

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

Range

Distributed across Norway and Taiwan.

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 2 countries:

🇳🇴 Norway 🇹🇼 Taiwan