Black-breasted Puffleg vs Lesser Pencil-tailed Tree Mouse

Eriocnemis nigrivestis compared with Chiropodomys pusillus

Key Differences

• Black-breasted Puffleg is Endangered while Lesser Pencil-tailed Tree Mouse is Data Deficient.

Taxonomic Classification

Rank	Black-breasted Puffleg	Lesser Pencil-tailed Tree Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Apodiformes (Apodiformes)	Rodentia (Rodents)
Family	Trochilidae	Muridae (Mice & Rats)
Genus	Eriocnemis	Chiropodomys
Species	Eriocnemis nigrivestis	Chiropodomys pusillus

Evolutionary Relationship

Black-breasted Puffleg and Lesser Pencil-tailed Tree Mouse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-breasted Puffleg

EN — Endangered

Lesser Pencil-tailed Tree Mouse

DD — Data Deficient

Physical Characteristics

Attribute	Black-breasted Puffleg	Lesser Pencil-tailed Tree Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-breasted Puffleg

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.

Range

Distributed across Ecuador and Norway. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Lesser Pencil-tailed Tree Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Black-breasted Puffleg

The Black-breasted Puffleg (Eriocnemis nigrivestis) is a species in the genus Eriocnemis. It is currently classified as Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 4 distinct biome types within the Neotropic biogeographic realm.