small tortoiseshell vs Snowy-crowned Tern

Aglais urticae compared with Sterna trudeaui

Key Differences

• small tortoiseshell is Near Threatened while Snowy-crowned Tern is Least Concern.

Taxonomic Classification

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

Evolutionary Relationship

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

Conservation Status

small tortoiseshell

NT — Near Threatened

Snowy-crowned Tern

LC — Least Concern

Physical Characteristics

Attribute	small tortoiseshell	Snowy-crowned Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Snowy-crowned Tern

Habitat

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

Range

Found in Norway.

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