Aders' duiker vs Black-thighed Puffleg

Cephalophus adersi compared with Eriocnemis derbyi

Key Differences

• Aders' duiker is Critically Endangered while Black-thighed Puffleg is Near Threatened.

Taxonomic Classification

Rank	Aders' duiker	Black-thighed Puffleg
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Artiodactyla (Even-toed Ungulates)	Apodiformes (Apodiformes)
Family	Bovidae (Bovids)	Trochilidae
Genus	Cephalophus	Eriocnemis
Species	Cephalophus adersi	Eriocnemis derbyi

Evolutionary Relationship

Aders' duiker and Black-thighed Puffleg share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Aders' duiker

CR — Critically Endangered

Black-thighed Puffleg

NT — Near Threatened

Physical Characteristics

Attribute	Aders' duiker	Black-thighed Puffleg
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Aders' duiker

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 5 distinct biome types within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Kenya. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its 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.

Aders' duiker

The Aders' duiker (Cephalophus adersi) is a species in the genus Cephalophus. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 5 distinct biome types within the Afrotropic biogeo.

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.