Long-tailed Sylph vs Rufous-breasted Hermit

Aglaiocercus kingii compared with Glaucis hirsutus

Taxonomic Classification

Rank	Long-tailed Sylph	Rufous-breasted Hermit
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order same	Apodiformes (Apodiformes)	Apodiformes (Apodiformes)
Family same	Trochilidae	Trochilidae
Genus	Aglaiocercus	Glaucis
Species	Aglaiocercus kingii	Glaucis hirsutus

Evolutionary Relationship

Long-tailed Sylph and Rufous-breasted Hermit share a common ancestor at the Family level: Trochilidae.

Conservation Status

Long-tailed Sylph

LC — Least Concern

Rufous-breasted Hermit

LC — Least Concern

Physical Characteristics

Attribute	Long-tailed Sylph	Rufous-breasted Hermit
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Rufous-breasted Hermit

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Long-tailed Sylph

One of the most strikingly ornamented hummingbirds, male long-tailed sylphs have iridescent green plumage and dramatically elongated, ribbon-like outer tail feathers reaching up to 22 cm — over three times the body length. Found in Andean cloud forests of Colombia and Venezuela, they inhabit humid montane forest between 1,400–2,800 meters elevation. Males perform elaborate display flights to attract females. Their extravagant tails are a classic example of sexual selection via female preference.

Rufous-breasted Hermit

A large hermit hummingbird of humid lowland and foothill forests from Central America through the Amazon basin, rufous-breasted hermits have cinnamon-rufous breast and underpart plumage contrasting with bronzy-green upper parts and a long curved bill. Males gather at leks — communal singing assemblies — where they perform vocal displays to attract females. They follow trap-line routes through dense forest understory. Important pollinators of large Heliconia flowers in tropical rainforest.

Shared Countries

Both species can be found in 4 countries:

🇨🇴 Colombia 🇪🇨 Ecuador 🇳🇴 Norway 🇻🇪 Venezuela