Long-tailed Sylph vs Polynesian Tree Snail

Aglaiocercus kingii compared with Partula levistriata

Key Differences

• Long-tailed Sylph is Least Concern while Polynesian Tree Snail is Extinct.

Taxonomic Classification

Rank	Long-tailed Sylph	Polynesian Tree Snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Aves (Birds)	Gastropoda (Gastropoda)
Order	Apodiformes (Apodiformes)	Stylommatophora (Stylommatophora)
Family	Trochilidae	Partulidae
Genus	Aglaiocercus	Partula
Species	Aglaiocercus kingii	Partula levistriata

Evolutionary Relationship

Long-tailed Sylph and Polynesian Tree Snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Long-tailed Sylph

LC — Least Concern

Polynesian Tree Snail

EX — Extinct

Physical Characteristics

Attribute	Long-tailed Sylph	Polynesian Tree Snail
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.

Polynesian Tree Snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.