Adder'S Fern vs American Bald Eagle

Polypodium vulgare compared with Haliaeetus leucocephalus

Key Differences

Adder'S Fern is Least Concern while American Bald Eagle is Not Evaluated.

Taxonomic Classification

Rank	Adder'S Fern	American Bald Eagle
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (Chordates)
Class	Polypodiopsida (Polypodiopsida)	Aves (Birds)
Order	Polypodiales (Polypodiales)	Accipitriformes (Hawks & Eagles)
Family	Polypodiaceae	Accipitridae (Hawks & Eagles)
Genus	Polypodium	Haliaeetus (Sea Eagles)
Species	Polypodium vulgare	Haliaeetus leucocephalus

Conservation Status

Adder'S Fern

LC — Least Concern

American Bald Eagle

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Physical Characteristics

Attribute	Adder'S Fern	American Bald Eagle
Diet	—	Carnivore
Average Lifespan	—	28 years
Average Length	—	90 cm
Average Weight	—	5.0 kg

Habitat & Geographic Range

Adder'S Fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Found across Europe (7 countries) and North America (United States).

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).

Adder'S Fern

The Adder'S Fern (Polypodium vulgare) is a species in the genus Polypodium. It is currently classified as Least Concern on the IUCN Red List. This species inhabits Typically found in moist, shaded forest floors and tropical canopies, found across Belgium, Denmark, Finland, Iceland, and Norway.

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.