Black-thighed Puffleg vs Chestnut-flanked Sparrowhawk

Eriocnemis derbyi compared with Accipiter castanilius

Key Differences

• Black-thighed Puffleg is Near Threatened while Chestnut-flanked Sparrowhawk is Least Concern.

Taxonomic Classification

Rank	Black-thighed Puffleg	Chestnut-flanked Sparrowhawk
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Apodiformes (Apodiformes)	Accipitriformes (Hawks & Eagles)
Family	Trochilidae	Accipitridae (Hawks & Eagles)
Genus	Eriocnemis	Accipiter
Species	Eriocnemis derbyi	Accipiter castanilius

Evolutionary Relationship

Black-thighed Puffleg and Chestnut-flanked Sparrowhawk share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Black-thighed Puffleg

NT — Near Threatened

Chestnut-flanked Sparrowhawk

LC — Least Concern

Physical Characteristics

Attribute	Black-thighed Puffleg	Chestnut-flanked Sparrowhawk
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-thighed Puffleg

Habitat

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

Range

Distributed across Colombia, Ecuador, and Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Chestnut-flanked Sparrowhawk

Habitat

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

Range

Found in Norway.

Black-thighed Puffleg

An Andean puffleg hummingbird named for the males' distinctive velvety black thighs contrasting with the characteristic white leg feather puffs, black-thighed pufflegs inhabit humid montane forest and forest edges in Ecuador and Colombia at elevations of 1,500–3,500 meters. Males display glittering green plumage with a violet-blue tail. Listed as Near Threatened due to deforestation of the Andean cloud forest, with populations declining as the specialized high-altitude forest habitat is cleared for agriculture.

Chestnut-flanked Sparrowhawk

The Chestnut-flanked Sparrowhawk (Accipiter castanilius) is a species in the genus Accipiter. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway