Schwarznacken-Seeschwalbe vs Flussseeschwalbe

Sterna sumatrana compared with Sterna hirundo

Key Differences

• Schwarznacken-Seeschwalbe is Least Concern while Flussseeschwalbe is Endangered.

Taxonomic Classification

Rank	Schwarznacken-Seeschwalbe	Flussseeschwalbe
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Aves (Vögel)	Aves (Vögel)
Order same	Charadriiformes (Regenpfeiferartige)	Charadriiformes (Regenpfeiferartige)
Family same	Laridae	Laridae
Genus same	Sterna	Sterna
Species	Sterna sumatrana	Sterna hirundo

Evolutionary Relationship

Schwarznacken-Seeschwalbe and Flussseeschwalbe share a common ancestor at the Genus level: Sterna.

Conservation Status

Schwarznacken-Seeschwalbe

LC — Least Concern

Flussseeschwalbe

EN — Endangered

Physical Characteristics

Attribute	Schwarznacken-Seeschwalbe	Flussseeschwalbe
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Schwarznacken-Seeschwalbe

Habitat

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

Range

Found in Norway.

Flussseeschwalbe

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.

Schwarznacken-Seeschwalbe

The Black-naped Tern (Sterna sumatrana) is a species in the genus Sterna. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Flussseeschwalbe

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 1 countries:

🇳🇴 Norway