Japanese Weasel vs Ruby-Crowned Kinglet

Mustela itatsi compared with Regulus calendula

Key Differences

• Japanese Weasel is Near Threatened while Ruby-Crowned Kinglet is Least Concern.

Taxonomic Classification

Rank	Japanese Weasel	Ruby-Crowned Kinglet
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Carnivora (Carnivorans)	Passeriformes (Songbirds)
Family	Mustelidae (Weasels & Otters)	Regulidae
Genus	Mustela	Regulus
Species	Mustela itatsi	Regulus calendula

Evolutionary Relationship

Japanese Weasel and Ruby-Crowned Kinglet share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Japanese Weasel

NT — Near Threatened

Ruby-Crowned Kinglet

LC — Least Concern

Physical Characteristics

Attribute	Japanese Weasel	Ruby-Crowned Kinglet
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Japanese Weasel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Japan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Ruby-Crowned Kinglet

Habitat

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

Range

Distributed across Norway and United States.