Gray-backed Tern vs small tortoiseshell

Onychoprion lunatus compared with Aglais urticae

Key Differences

• Gray-backed Tern is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Gray-backed Tern	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Charadriiformes (Charadriiformes)	Lepidoptera (Butterflies & Moths)
Family	Laridae	Nymphalidae (Brush-footed Butterflies)
Genus	Onychoprion	Aglais
Species	Onychoprion lunatus	Aglais urticae

Evolutionary Relationship

Gray-backed Tern and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Gray-backed Tern

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Gray-backed Tern	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray-backed Tern

Habitat

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

Range

Found in Norway.

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

small tortoiseshell

small tortoiseshell (Aglais urticae) 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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway