Alpine Cliff Fern vs pigargo-americano

Woodsia alpina compared with Haliaeetus leucocephalus

Key Differences

Alpine Cliff Fern is Least Concern while pigargo-americano is Not Evaluated.

Taxonomic Classification

Rank	Alpine Cliff Fern	pigargo-americano
Kingdom	Plantae (plantas)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (cordados)
Class	Polypodiopsida (Polypodiopsida)	Aves (ave)
Order	Polypodiales (Polypodiales)	Accipitriformes (Hawks & Eagles)
Family	Woodsiaceae	Accipitridae (Hawks & Eagles)
Genus	Woodsia	Haliaeetus (Sea Eagles)
Species	Woodsia alpina	Haliaeetus leucocephalus

Conservation Status

Alpine Cliff Fern

LC — Least Concern

pigargo-americano

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Physical Characteristics

Attribute	Alpine Cliff Fern	pigargo-americano
Diet	—	Carnivore
Average Lifespan	—	28 years
Average Length	—	90 cm
Average Weight	—	5.0 kg

Habitat & Geographic Range

Alpine Cliff Fern

Habitat

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

Range

Distributed across Canada, Iceland, Norway, Sweden, and United States.

pigargo-americano

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).

Alpine Cliff Fern

The Alpine Cliff Fern (Woodsia alpina) is a species in the genus Woodsia. It is currently classified as Least Concern on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies. Distributed across Canada, Iceland, Norway, Sweden, and United States.

pigargo-americano

A ave nacional dos Estados Unidos e símbolo do sucesso conservacionista americano, a águia-careca tem uma envergadura de até 2,4 metros e habita florestas e zonas húmidas próximas de águas abertas em toda a América do Norte. Quase extinta na década de 1960 devido ao envenenamento por DDT e à caça, recuperou de forma notável após as proibições de pesticidas e a Lei das Espécies em Perigo.