Long-tailed Sylph vs Rouen pansy

Aglaiocercus kingii compared with Viola hispida

Key Differences

• Long-tailed Sylph is Least Concern while Rouen pansy is Critically Endangered.

Taxonomic Classification

Rank	Long-tailed Sylph	Rouen pansy
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Magnoliopsida (Dicots)
Order	Apodiformes (Apodiformes)	Malpighiales (Malpighiales)
Family	Trochilidae	Violaceae
Genus	Aglaiocercus	Viola
Species	Aglaiocercus kingii	Viola hispida

Conservation Status

Long-tailed Sylph

LC — Least Concern

Rouen pansy

CR — Critically Endangered

Physical Characteristics

Attribute	Long-tailed Sylph	Rouen pansy
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.

Rouen pansy

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.