Eurasian beaver vs Lesser Bristlebill

Castor fiber compared with Bleda notatus

Key Differences

• Eurasian beaver is Vulnerable while Lesser Bristlebill is Least Concern.

Taxonomic Classification

Rank	Eurasian beaver	Lesser Bristlebill
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Rodentia (Rodents)	Passeriformes (Songbirds)
Family	Castoridae (Beavers)	Pycnonotidae
Genus	Castor (Beavers)	Bleda
Species	Castor fiber	Bleda notatus

Evolutionary Relationship

Eurasian beaver and Lesser Bristlebill share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Eurasian beaver

VU — Vulnerable

Lesser Bristlebill

LC — Least Concern

Physical Characteristics

Attribute	Eurasian beaver	Lesser Bristlebill
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.

Lesser Bristlebill

Habitat

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

Range

Found in Norway.

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 1 countries:

🇳🇴 Norway