Oso Polar vs Wild Birdnest Fern

Ursus maritimus compared with Asplenium serratum

Key Differences

• Oso Polar is Vulnerable while Wild Birdnest Fern is Not Evaluated.

Taxonomic Classification

Rank	Oso Polar	Wild Birdnest Fern
Kingdom	Animalia (Animals)	Plantae (planta)
Phylum	Chordata (cordados)	Tracheophyta
Class	Mammalia (mamíferos)	Polypodiopsida (Polypodiopsida)
Order	Carnivora (carnívoros)	Polypodiales (Polypodiales)
Family	Ursidae (Bears)	Aspleniaceae
Genus	Ursus (Bears)	Asplenium
Species	Ursus maritimus	Asplenium serratum

Conservation Status

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Wild Birdnest Fern

NE — Not Evaluated

Physical Characteristics

Attribute	Oso Polar	Wild Birdnest Fern
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic Range

Oso Polar

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Wild Birdnest Fern

Habitat

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

Range

Distributed across Brazil, Colombia, and Cuba.

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.