Amerikanischer Biber vs Flussseeschwalbe

Castor canadensis compared with Sterna hirundo

Key Differences

• Amerikanischer Biber is Not Evaluated while Flussseeschwalbe is Endangered.

Taxonomic Classification

Rank	Amerikanischer Biber	Flussseeschwalbe
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Mammalia (Säugetiere)	Aves (Vögel)
Order	Rodentia (Nagetiere)	Charadriiformes (Regenpfeiferartige)
Family	Castoridae (Beavers)	Laridae
Genus	Castor (Beavers)	Sterna
Species	Castor canadensis	Sterna hirundo

Evolutionary Relationship

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

Conservation Status

Amerikanischer Biber

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Flussseeschwalbe

EN — Endangered

Physical Characteristics

Attribute	Amerikanischer Biber	Flussseeschwalbe
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	1.0 m	—
Average Weight	25.0 kg	—

Habitat & Geographic Range

Amerikanischer Biber

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

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.

Amerikanischer Biber

The largest rodent in North America, Canadian beavers weigh up to 32 kg and are master ecosystem engineers inhabiting rivers, lakes, and wetlands across Canada and the northern United States. By felling trees and constructing dams up to hundreds of meters long, beavers create ponds that provide habitat for hundreds of species. Their lodges and canals transform entire watersheds. Once nearly hunted to extinction for their fur, beaver populations have recovered strongly.

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 7 countries:

🇧🇪 Belgium 🇱🇺 Luxembourg 🇳🇴 Norway 🇵🇹 Portugal 🇷🇺 Russia 🇸🇪 Sweden 🇺🇸 United States