Olive-Backed Thrush vs small tortoiseshell

Catharus ustulatus compared with Aglais urticae

Key Differences

Olive-Backed Thrush is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Olive-Backed Thrush	small tortoiseshell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Insecta (Insects)
Order	Passeriformes (Songbirds)	Lepidoptera (Butterflies & Moths)
Family	Turdidae	Nymphalidae (Brush-footed Butterflies)
Genus	Catharus	Aglais
Species	Catharus ustulatus	Aglais urticae

Evolutionary Relationship

Olive-Backed Thrush and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Olive-Backed Thrush

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Olive-Backed Thrush	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Olive-Backed Thrush

Habitat

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

Range

Widely distributed across Europe (Denmark, Norway, Sweden), North America (United States), and South America (Colombia, Ecuador, Venezuela).

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.

Olive-Backed Thrush

Olive-Backed Thrush (Catharus ustulatus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

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.