American Bald Eagle vs Bigeye thresher

Haliaeetus leucocephalus compared with Alopias pelagicus

Key Differences

• American Bald Eagle is Not Evaluated while Bigeye thresher is Endangered.

Taxonomic Classification

Rank	American Bald Eagle	Bigeye thresher
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Chondrichthyes (Cartilaginous Fish)
Order	Accipitriformes (Hawks & Eagles)	Lamniformes (Mackerel Sharks)
Family	Accipitridae (Hawks & Eagles)	Alopiidae
Genus	Haliaeetus (Sea Eagles)	Alopias
Species	Haliaeetus leucocephalus	Alopias pelagicus

Evolutionary Relationship

American Bald Eagle and Bigeye thresher share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

American Bald Eagle

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Bigeye thresher

EN — Endangered

Physical Characteristics

Attribute	American Bald Eagle	Bigeye thresher
Diet	Carnivore	—
Average Lifespan	28 years	—
Average Length	90 cm	—
Average Weight	5.0 kg	—

Habitat & Geographic Range

American Bald Eagle

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 10 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (8 countries), North America (United States), and South America (Ecuador).

Bigeye thresher

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Distributed across Colombia and Taiwan. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

American Bald Eagle

The national bird of the United States and a symbol of American conservation success, bald eagles have a wingspan of up to 2.4 meters and inhabit forests and wetlands near open water across North America. Powerful aerial predators and scavengers, they specialize in fish but also take waterfowl and carrion. Nearly extinct by the 1960s due to DDT poisoning and hunting, the bald eagle recovered dramatically following pesticide bans and the Endangered Species Act.

Bigeye thresher

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.