Bay-Breasted Warbler vs small tortoiseshell

Setophaga castanea compared with Aglais urticae

Key Differences

• Bay-Breasted Warbler is Least Concern while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Bay-Breasted Warbler	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	Parulidae	Nymphalidae (Brush-footed Butterflies)
Genus	Setophaga	Aglais
Species	Setophaga castanea	Aglais urticae

Evolutionary Relationship

Bay-Breasted Warbler and small tortoiseshell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bay-Breasted Warbler

LC — Least Concern

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Bay-Breasted Warbler	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bay-Breasted Warbler

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, United States, and 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.

Bay-Breasted Warbler

Bay-Breasted Warbler (Setophaga castanea) 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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway