Japanese Weasel vs Plain-crowned Spinetail

Mustela itatsi compared with Synallaxis gujanensis

Key Differences

• Japanese Weasel is Near Threatened while Plain-crowned Spinetail is Least Concern.

Taxonomic Classification

Rank	Japanese Weasel	Plain-crowned Spinetail
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)	Furnariidae
Genus	Mustela	Synallaxis
Species	Mustela itatsi	Synallaxis gujanensis

Evolutionary Relationship

Japanese Weasel and Plain-crowned Spinetail share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Japanese Weasel

NT — Near Threatened

Plain-crowned Spinetail

LC — Least Concern

Physical Characteristics

Attribute	Japanese Weasel	Plain-crowned Spinetail
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.

Plain-crowned Spinetail

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.