Broken-barred Roller vs Common Tern

Ancylis unguicella compared with Sterna hirundo

Key Differences

• Broken-barred Roller is Least Concern while Common Tern is Endangered.

Taxonomic Classification

Rank	Broken-barred Roller	Common Tern
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum	Arthropoda (động vật Chân khớp)	Chordata (động vật có dây sống)
Class	Insecta (côn trùng)	Aves (chim)
Order	Lepidoptera (bộ Cánh vảy)	Charadriiformes (Bộ Choi choi)
Family	Tortricidae	Laridae
Genus	Ancylis	Sterna
Species	Ancylis unguicella	Sterna hirundo

Evolutionary Relationship

Broken-barred Roller and Common Tern share a common ancestor at the Kingdom level: Animalia. (động vật)

Conservation Status

Broken-barred Roller

LC — Least Concern

Common Tern

EN — Endangered

Physical Characteristics

Attribute	Broken-barred Roller	Common Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Broken-barred Roller

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Canada, Denmark, Norway, and Sweden.

Common Tern

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Broken-barred Roller

The Broken-Barred Roller (Ancylis unguicella) 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.

Common Tern

Common Tern (Sterna hirundo) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden