Arctic lemming vs ハジロカイツブリ

Dicrostonyx torquatus compared with Podiceps nigricollis

Key Differences

• Arctic lemming is Least Concern while ハジロカイツブリ is Endangered.

Taxonomic Classification

Rank	Arctic lemming	ハジロカイツブリ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Aves (鳥類)
Order	Rodentia (ネズミ目)	Podicipediformes (Podicipediformes)
Family	Cricetidae	Podicipedidae
Genus	Dicrostonyx	Podiceps
Species	Dicrostonyx torquatus	Podiceps nigricollis

Evolutionary Relationship

Arctic lemming and ハジロカイツブリ share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Arctic lemming

LC — Least Concern

ハジロカイツブリ

EN — Endangered

Physical Characteristics

Attribute	Arctic lemming	ハジロカイツブリ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arctic lemming

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

ハジロカイツブリ

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 8 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (5 countries) and North America (United States). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Arctic lemming

The Arctic lemming (Dicrostonyx torquatus) is a species in the genus Dicrostonyx. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

ハジロカイツブリ

Black-Necked Grebe（Podiceps nigricollis）はIUCNレッドリストで絶滅危惧種（EN）に分類されています。野生での絶滅リスクが高く、個体数が著しく減少し、生存を脅かす要因が継続しています。