Alder Flycatcher vs Big Finner

Empidonax alnorum compared with Balaenoptera physalus

Key Differences

• Alder Flycatcher is Least Concern while Big Finner is Endangered.

Taxonomic Classification

Rank	Alder Flycatcher	Big Finner
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Passeriformes (Songbirds)	Cetacea (Whales & Dolphins)
Family	Tyrannidae	Balaenopteridae (Rorquals)
Genus	Empidonax	Balaenoptera (Rorquals)
Species	Empidonax alnorum	Balaenoptera physalus

Evolutionary Relationship

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

Conservation Status

Alder Flycatcher

LC — Least Concern

Big Finner

EN — Endangered

Physical Characteristics

Attribute	Alder Flycatcher	Big Finner
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alder Flycatcher

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, United States, and Venezuela.

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.

Alder Flycatcher

Alder Flycatcher (Empidonax alnorum) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

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 4 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇳🇴 Norway 🇻🇪 Venezuela