Long-tailed Sylph vs Spreading Grevillea

Aglaiocercus kingii compared with Grevillea humifusa

Key Differences

• Long-tailed Sylph is Least Concern while Spreading Grevillea is Critically Endangered.

Taxonomic Classification

Rank	Long-tailed Sylph	Spreading Grevillea
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Magnoliopsida (Dicots)
Order	Apodiformes (Apodiformes)	Proteales (Proteales)
Family	Trochilidae	Proteaceae
Genus	Aglaiocercus	Grevillea
Species	Aglaiocercus kingii	Grevillea humifusa

Conservation Status

Long-tailed Sylph

LC — Least Concern

Spreading Grevillea

CR — Critically Endangered

Physical Characteristics

Attribute	Long-tailed Sylph	Spreading Grevillea
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.

Spreading Grevillea

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.