Flussseeschwalbe vs Fransenfledermaus

Sterna hirundo compared with Myotis nattereri

Key Differences

• Flussseeschwalbe is Endangered while Fransenfledermaus is Critically Endangered.

Taxonomic Classification

Rank	Flussseeschwalbe	Fransenfledermaus
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Aves (Vögel)	Mammalia (Säugetiere)
Order	Charadriiformes (Regenpfeiferartige)	Chiroptera (Fledertiere)
Family	Laridae	Vespertilionidae
Genus	Sterna	Myotis
Species	Sterna hirundo	Myotis nattereri

Evolutionary Relationship

Flussseeschwalbe and Fransenfledermaus share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Flussseeschwalbe

EN — Endangered

Fransenfledermaus

CR — Critically Endangered

Physical Characteristics

Attribute	Flussseeschwalbe	Fransenfledermaus
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Fransenfledermaus

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (6 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇱🇺 Luxembourg 🇳🇴 Norway 🇸🇪 Sweden