Eurasian beaver vs Hover fly

Castor fiber compared with Eristalis rupium

Key Differences

• Eurasian beaver is Vulnerable while Hover fly is Near Threatened.

Taxonomic Classification

Rank	Eurasian beaver	Hover fly
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Rodentia (Rodents)	Diptera (Diptera)
Family	Castoridae (Beavers)	Syrphidae
Genus	Castor (Beavers)	Eristalis
Species	Castor fiber	Eristalis rupium

Evolutionary Relationship

Eurasian beaver and Hover fly share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Eurasian beaver

VU — Vulnerable

Hover fly

NT — Near Threatened

Physical Characteristics

Attribute	Eurasian beaver	Hover fly
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Hover fly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Eurasian beaver

Eurasian beaver (Castor fiber) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 4 countries:

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