Alaskan Brook Lamprey vs American Bald Eagle

Lethenteron alaskense compared with Haliaeetus leucocephalus

Key Differences

• Alaskan Brook Lamprey is Data Deficient while American Bald Eagle is Not Evaluated.

Taxonomic Classification

Rank	Alaskan Brook Lamprey	American Bald Eagle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Petromyzonti (Petromyzonti)	Aves (Birds)
Order	Petromyzontiformes (lamprey)	Accipitriformes (Hawks & Eagles)
Family	Petromyzontidae	Accipitridae (Hawks & Eagles)
Genus	Lethenteron	Haliaeetus (Sea Eagles)
Species	Lethenteron alaskense	Haliaeetus leucocephalus

Evolutionary Relationship

Alaskan Brook Lamprey and American Bald Eagle share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Alaskan Brook Lamprey

DD — Data Deficient

American Bald Eagle

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Physical Characteristics

Attribute	Alaskan Brook Lamprey	American Bald Eagle
Diet	—	Carnivore
Average Lifespan	—	28 years
Average Length	—	90 cm
Average Weight	—	5.0 kg

Habitat & Geographic Range

Alaskan Brook Lamprey

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).

Alaskan Brook Lamprey

The Alaskan Brook Lamprey (Lethenteron alaskense) is a species in the genus Lethenteron. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment.

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.