Cerceta castaña vs Oso Polar

Anas castanea compared with Ursus maritimus

Key Differences

Cerceta castaña is Least Concern while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Cerceta castaña	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Aves (Birds)	Mammalia (mamíferos)
Order	Anseriformes (Anseriformes)	Carnivora (carnívoros)
Family	Anatidae	Ursidae (Bears)
Genus	Anas	Ursus (Bears)
Species	Anas castanea	Ursus maritimus

Evolutionary Relationship

Cerceta castaña and Oso Polar share a common ancestor at the Phylum level: Chordata. (cordados)

Vista Phylum: Chordata

Conservation Status

Cerceta castaña

LC — Least Concern

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Cerceta castaña	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Cerceta castaña

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (8 countries).

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.

Cerceta castaña

El pato castaño (Anas castanea) está clasificado como de Preocupación Menor (LC) en la Lista Roja de la UICN. Especie ampliamente distribuida y abundante, con poblaciones estables y sin preocupaciones inmediatas de conservación.

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.