Kosrae Flying Fox vs Long-tailed Sylph

Pteropus ualanus compared with Aglaiocercus kingii

Key Differences

• Kosrae Flying Fox is Endangered while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Kosrae Flying Fox	Long-tailed Sylph
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum same	Chordata (động vật có dây sống)	Chordata (động vật có dây sống)
Class	Mammalia (lớp Thú)	Aves (chim)
Order	Chiroptera (bộ Dơi)	Apodiformes (Bộ Yến)
Family	Pteropodidae (Fruit Bats)	Trochilidae
Genus	Pteropus (Flying Foxes)	Aglaiocercus
Species	Pteropus ualanus	Aglaiocercus kingii

Evolutionary Relationship

Kosrae Flying Fox and Long-tailed Sylph share a common ancestor at the Phylum level: Chordata. (động vật có dây sống)

Conservation Status

Kosrae Flying Fox

EN — Endangered

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Kosrae Flying Fox	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Kosrae Flying Fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Long-tailed Sylph

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

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.