Чёрная крачка vs Eurasian beaver

Chlidonias niger compared with Castor fiber

Key Differences

• Чёрная крачка is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Чёрная крачка	Eurasian beaver
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class	Aves (птицы)	Mammalia (млекопитающие)
Order	Charadriiformes (ржанкообразные)	Rodentia (грызуны)
Family	Laridae	Castoridae (Beavers)
Genus	Chlidonias	Castor (Beavers)
Species	Chlidonias niger	Castor fiber

Evolutionary Relationship

Чёрная крачка and Eurasian beaver share a common ancestor at the Phylum level: Chordata. (хордовые)

Conservation Status

Чёрная крачка

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Чёрная крачка	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Чёрная крачка

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

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.

Чёрная крачка

Black Tern (Chlidonias niger) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

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