Long-tailed Sylph vs Variable Flying Fox

Aglaiocercus kingii compared with Pteropus hypomelanus

Key Differences

• Long-tailed Sylph is Least Concern while Variable Flying Fox is Near Threatened.

Taxonomic Classification

Rank	Long-tailed Sylph	Variable Flying Fox
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Apodiformes (Apodiformes)	Chiroptera (Bats)
Family	Trochilidae	Pteropodidae (Fruit Bats)
Genus	Aglaiocercus	Pteropus (Flying Foxes)
Species	Aglaiocercus kingii	Pteropus hypomelanus

Evolutionary Relationship

Long-tailed Sylph and Variable Flying Fox share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Long-tailed Sylph

LC — Least Concern

Variable Flying Fox

NT — Near Threatened

Physical Characteristics

Attribute	Long-tailed Sylph	Variable Flying Fox
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.

Variable Flying Fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.