Black-thighed Puffleg vs Colorful Puffleg

Eriocnemis derbyi compared with Eriocnemis mirabilis

Key Differences

• Black-thighed Puffleg is Near Threatened while Colorful Puffleg is Critically Endangered.

Taxonomic Classification

Rank	Black-thighed Puffleg	Colorful Puffleg
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class same	Aves (새)	Aves (새)
Order same	Apodiformes (칼새목)	Apodiformes (칼새목)
Family same	Trochilidae	Trochilidae
Genus same	Eriocnemis	Eriocnemis
Species	Eriocnemis derbyi	Eriocnemis mirabilis

Evolutionary Relationship

Black-thighed Puffleg and Colorful Puffleg share a common ancestor at the Genus level: Eriocnemis.

Conservation Status

Black-thighed Puffleg

NT — Near Threatened

Colorful Puffleg

CR — Critically Endangered

Physical Characteristics

Attribute	Black-thighed Puffleg	Colorful Puffleg
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.

Colorful Puffleg

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 5 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

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

Black-thighed Puffleg

검은넓적다리털다리벌새(Eriocnemis derbyi)는 수컷의 특징적인 흑색 허벅지가 흰 다리털 장식과 대비되어 이름이 붙은 안데스 지역 벌새입니다. 해발 1,500~3,500m의 에콰도르와 콜롬비아 운무림과 숲 가장자리에 서식합니다. 수컷은 남빛 보라색 꼬리를 가진 반짝이는 녹색 깃털을 보여줍니다. 고지대 운무림이 농업으로 개간되면서 개체수가 감소하고 있어 준위협종(NT)으로 분류됩니다.

Colorful Puffleg

<em>Eriocnemis mirabilis</em>, the colorful puffleg, is a hummingbird in the family Trochilidae assessed as Critically Endangered by the IUCN. It is one of the most threatened hummingbirds in the world, known from an extremely restricted range centred on the Pacific slope of the western Andes in Colombia, with additional records attributed to Norway likely reflecting data artefacts or taxonomic uncertainties. The species inhabits tropical and subtropical moist broadleaf forests and related cloud forest biome types between approximately 1,800 and 2,200 metres elevation. Male colorful pufflegs are distinguished by brilliant iridescent plumage and distinctive white leg puffs, features typical of the genus <em>Eriocnemis</em>. The Critically Endangered status reflects ongoing destruction of cloud forest within its tiny known range, which may encompass fewer than 100 square kilometres of suitable habitat. As a nectarivore and incidental insectivore, this hummingbird depends on intact forest for flowering plant resources and arthropod prey. Conservation of the remaining forest patches in its restricted Colombian range is considered critical for the survival of this species. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 2 countries:

🇨🇴 Colombia 🇳🇴 Norway