Bridge Roller vs River Tern

Ancylis uncella compared with Sterna aurantia

Key Differences

• Bridge Roller is Least Concern while River Tern is Vulnerable.

Taxonomic Classification

Rank	Bridge Roller	River Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Lepidoptera (Butterflies & Moths)	Charadriiformes (Charadriiformes)
Family	Tortricidae	Laridae
Genus	Ancylis	Sterna
Species	Ancylis uncella	Sterna aurantia

Evolutionary Relationship

Bridge Roller and River Tern share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bridge Roller

LC — Least Concern

River Tern

VU — Vulnerable

Physical Characteristics

Attribute	Bridge Roller	River Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bridge Roller

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

River Tern

Habitat

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

Range

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

Bridge Roller

The Bridge Roller (Ancylis uncella) is a species in the genus Ancylis. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway