Big Finner vs Mottled Petrel

Balaenoptera physalus compared with Pterodroma inexpectata

Key Differences

• Big Finner is Endangered while Mottled Petrel is Near Threatened.

Taxonomic Classification

Rank	Big Finner	Mottled 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 inexpectata

Evolutionary Relationship

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

Conservation Status

Big Finner

EN — Endangered

Mottled Petrel

NT — Near Threatened

Physical Characteristics

Attribute	Big Finner	Mottled 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.

Mottled Petrel

Habitat

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

Range

Distributed across Ecuador and Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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:

🇪🇨 Ecuador 🇳🇴 Norway