Long-tailed Sylph vs Running mountaingrass

Aglaiocercus kingii compared with Oplismenus compositus

Taxonomic Classification

Rank	Long-tailed Sylph	Running mountaingrass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Liliopsida (Monocots)
Order	Apodiformes (Apodiformes)	Poales (Grasses)
Family	Trochilidae	Poaceae (Grass Family)
Genus	Aglaiocercus	Oplismenus
Species	Aglaiocercus kingii	Oplismenus compositus

Conservation Status

Long-tailed Sylph

LC — Least Concern

Running mountaingrass

LC — Least Concern

Physical Characteristics

Attribute	Long-tailed Sylph	Running mountaingrass
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.

Running mountaingrass

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (Indonesia, Taiwan), Europe (France, United Kingdom), North America (Guatemala, Honduras, United States), Oceania and the Pacific (9 countries), and South America (Colombia).

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.

Shared Countries

Both species can be found in 1 countries:

🇨🇴 Colombia