American Bald Eagle vs Small Adder's-Tongue

Haliaeetus leucocephalus compared with Ophioglossum azoricum

Key Differences

American Bald Eagle is Not Evaluated while Small Adder's-Tongue is Critically Endangered.

Taxonomic Classification

Rank	American Bald Eagle	Small Adder's-Tongue
Kingdom	Animalia (động vật)	Plantae (thực vật)
Phylum	Chordata (động vật có dây sống)	Tracheophyta
Class	Aves (chim)	Polypodiopsida (Lớp Dương xỉ)
Order	Accipitriformes (bộ Ưng)	Ophioglossales (Bộ Lưỡi rắn)
Family	Accipitridae (Hawks & Eagles)	Ophioglossaceae
Genus	Haliaeetus (Sea Eagles)	Ophioglossum
Species	Haliaeetus leucocephalus	Ophioglossum azoricum

Conservation Status

American Bald Eagle

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Small Adder's-Tongue

CR — Critically Endangered

Physical Characteristics

Attribute	American Bald Eagle	Small Adder's-Tongue
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).

Small Adder's-Tongue

Habitat

Inhabits boreal forests and taiga within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Belgium, Iceland, Norway, Portugal, and Sweden. Currently classified as Critically 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.