Common Eider vs Long-tailed Ground Squirrel

Somateria mollissima compared with Urocitellus undulatus

Key Differences

• Common Eider is Near Threatened while Long-tailed Ground Squirrel is Least Concern.

Taxonomic Classification

Rank	Common Eider	Long-tailed Ground Squirrel
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Aves (นก)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Anseriformes (อันดับห่าน)	Rodentia (อันดับสัตว์ฟันแทะ)
Family	Anatidae	Sciuridae (Squirrels)
Genus	Somateria	Urocitellus
Species	Somateria mollissima	Urocitellus undulatus

Evolutionary Relationship

Common Eider and Long-tailed Ground Squirrel share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Common Eider

NT — Near Threatened

Long-tailed Ground Squirrel

LC — Least Concern

Physical Characteristics

Attribute	Common Eider	Long-tailed Ground Squirrel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Eider

Habitat

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

Range

Found across Europe (5 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Long-tailed Ground Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common Eider

Common Eider (Somateria mollissima) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.