Black-breasted Puffleg vs Guayaquil Squirrel

Eriocnemis nigrivestis compared with Sciurus stramineus

Key Differences

• Black-breasted Puffleg is Endangered while Guayaquil Squirrel is Least Concern.

Taxonomic Classification

Rank	Black-breasted Puffleg	Guayaquil Squirrel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Apodiformes (Apodiformes)	Rodentia (Rodents)
Family	Trochilidae	Sciuridae (Squirrels)
Genus	Eriocnemis	Sciurus (Tree Squirrels)
Species	Eriocnemis nigrivestis	Sciurus stramineus

Evolutionary Relationship

Black-breasted Puffleg and Guayaquil Squirrel share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-breasted Puffleg

EN — Endangered

Guayaquil Squirrel

LC — Least Concern

Physical Characteristics

Attribute	Black-breasted Puffleg	Guayaquil Squirrel
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.

Guayaquil Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Peru.

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.