European Ground Squirrel vs Gray-backed Tern

Spermophilus citellus compared with Onychoprion lunatus

Key Differences

• European Ground Squirrel is Endangered while Gray-backed Tern is Least Concern.

Taxonomic Classification

Rank	European Ground Squirrel	Gray-backed Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Charadriiformes (Charadriiformes)
Family	Sciuridae (Squirrels)	Laridae
Genus	Spermophilus	Onychoprion
Species	Spermophilus citellus	Onychoprion lunatus

Evolutionary Relationship

European Ground Squirrel and Gray-backed Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

European Ground Squirrel

EN — Endangered

Gray-backed Tern

LC — Least Concern

Physical Characteristics

Attribute	European Ground Squirrel	Gray-backed Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

European Ground Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Gray-backed Tern

Habitat

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

Range

Found in Norway.