Dusky Dolphin vs Green-tailed Trainbearer

Lagenorhynchus obscurus compared with Lesbia nuna

Taxonomic Classification

Rank	Dusky Dolphin	Green-tailed Trainbearer
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Apodiformes (Apodiformes)
Family	Delphinidae (Oceanic Dolphins)	Trochilidae
Genus	Lagenorhynchus	Lesbia
Species	Lagenorhynchus obscurus	Lesbia nuna

Evolutionary Relationship

Dusky Dolphin and Green-tailed Trainbearer share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dusky Dolphin

LC — Least Concern

Green-tailed Trainbearer

LC — Least Concern

Physical Characteristics

Attribute	Dusky Dolphin	Green-tailed Trainbearer
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dusky Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Green-tailed Trainbearer

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Green-tailed Trainbearer

A medium-sized Andean hummingbird with a long, deeply forked green tail — the longest tail relative to body size among trainbearer hummingbirds — male green-tailed trainbearers inhabit open grassland, scrub, and Andean hedgerows from Ecuador to Bolivia at elevations of 2,000–4,000 meters. Males perform aerial display flights with the ornamental tail streaming behind. Found in semi-open Andean landscapes including gardens, agricultural areas, and páramo edges where they feed at diverse flowering plants.