Long-tailed Sylph vs Millileaf Spiderhead

Aglaiocercus kingii compared with Serruria millefolia

Key Differences

• Long-tailed Sylph is Least Concern while Millileaf Spiderhead is Endangered.

Taxonomic Classification

Rank	Long-tailed Sylph	Millileaf Spiderhead
Kingdom	Animalia (động vật)	Plantae (thực vật)
Phylum	Chordata (động vật có dây sống)	Magnoliophyta (Flowering Plants)
Class	Aves (chim)	Magnoliopsida (Dicots)
Order	Apodiformes (Bộ Yến)	Proteales (Bộ Quắn hoa)
Family	Trochilidae	Proteaceae
Genus	Aglaiocercus	Serruria
Species	Aglaiocercus kingii	Serruria millefolia

Conservation Status

Long-tailed Sylph

LC — Least Concern

Millileaf Spiderhead

EN — Endangered

Physical Characteristics

Attribute	Long-tailed Sylph	Millileaf Spiderhead
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.

Millileaf Spiderhead

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.