Big Finner vs Gray-bellied Cuckoo

Balaenoptera physalus compared with Cacomantis passerinus

Key Differences

• Big Finner is Endangered while Gray-bellied Cuckoo is Least Concern.

Taxonomic Classification

Rank	Big Finner	Gray-bellied Cuckoo
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Cuculiformes (Cuculiformes)
Family	Balaenopteridae (Rorquals)	Cuculidae
Genus	Balaenoptera (Rorquals)	Cacomantis
Species	Balaenoptera physalus	Cacomantis passerinus

Evolutionary Relationship

Big Finner and Gray-bellied Cuckoo share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Big Finner

EN — Endangered

Gray-bellied Cuckoo

LC — Least Concern

Physical Characteristics

Attribute	Big Finner	Gray-bellied Cuckoo
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.

Gray-bellied Cuckoo

Habitat

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

Range

Found in Norway.

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 1 countries:

🇳🇴 Norway