Dusky-capped Greenlet vs Long-tailed Sylph

Hylophilus hypoxanthus compared with Aglaiocercus kingii

Taxonomic Classification

Rank	Dusky-capped Greenlet	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Passeriformes (Songbirds)	Apodiformes (Apodiformes)
Family	Vireonidae	Trochilidae
Genus	Hylophilus	Aglaiocercus
Species	Hylophilus hypoxanthus	Aglaiocercus kingii

Evolutionary Relationship

Dusky-capped Greenlet and Long-tailed Sylph share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Dusky-capped Greenlet

LC — Least Concern

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Dusky-capped Greenlet	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dusky-capped Greenlet

Habitat

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

Long-tailed Sylph

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.