Black-thighed Puffleg vs Brown eagle-ray

Eriocnemis derbyi compared with Aetomylaeus milvus

Key Differences

• Black-thighed Puffleg is Near Threatened while Brown eagle-ray is Endangered.

Taxonomic Classification

Rank	Black-thighed Puffleg	Brown eagle-ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Elasmobranchii
Order	Apodiformes (Apodiformes)	Myliobatiformes (Myliobatiformes)
Family	Trochilidae	Myliobatidae
Genus	Eriocnemis	Aetomylaeus
Species	Eriocnemis derbyi	Aetomylaeus milvus

Evolutionary Relationship

Black-thighed Puffleg and Brown eagle-ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-thighed Puffleg

NT — Near Threatened

Brown eagle-ray

EN — Endangered

Physical Characteristics

Attribute	Black-thighed Puffleg	Brown eagle-ray
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.

Brown eagle-ray

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

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

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.

Brown eagle-ray

The Brown Eagle-ray (Aetomylaeus milvus) is a species in the genus Aetomylaeus. It is currently classified as Endangered on the IUCN Red List. Native to Asia, inhabiting ecosystems characteristic of the region.