Bagwhale vs Blue-tailed Emerald

Balaenoptera acutorostrata compared with Chlorostilbon mellisugus

Taxonomic Classification

Rank	Bagwhale	Blue-tailed Emerald
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Apodiformes (Apodiformes)
Family	Balaenopteridae (Rorquals)	Trochilidae
Genus	Balaenoptera (Rorquals)	Chlorostilbon
Species	Balaenoptera acutorostrata	Chlorostilbon mellisugus

Evolutionary Relationship

Bagwhale and Blue-tailed Emerald share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bagwhale

LC — Least Concern

Blue-tailed Emerald

LC — Least Concern

Physical Characteristics

Attribute	Bagwhale	Blue-tailed Emerald
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bagwhale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador).

Blue-tailed Emerald

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Bagwhale

Bagwhale (Balaenoptera acutorostrata) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Blue-tailed Emerald

A small, jewel-like hummingbird named for the brilliant blue-green iridescence of the tail feathers, male blue-tailed emeralds display glittering green plumage throughout with a contrasting deep blue-green forked tail. Found in lowland tropical forest edges, savannas, and gardens from Venezuela and Colombia east to Trinidad and south to Bolivia and Brazil. They are common in disturbed and secondary habitats, making them relatively resilient to habitat modification compared to more specialized hummingbirds.

Shared Countries

Both species can be found in 3 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇳🇴 Norway