Long-tailed Sylph vs Short-tailed river stingray

Aglaiocercus kingii compared with Potamotrygon brachyura

Key Differences

• Long-tailed Sylph is Least Concern while Short-tailed river stingray is Data Deficient.

Taxonomic Classification

Rank	Long-tailed Sylph	Short-tailed river stingray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Elasmobranchii
Order	Apodiformes (Apodiformes)	Myliobatiformes (Myliobatiformes)
Family	Trochilidae	Potamotrygonidae
Genus	Aglaiocercus	Potamotrygon
Species	Aglaiocercus kingii	Potamotrygon brachyura

Evolutionary Relationship

Long-tailed Sylph and Short-tailed river stingray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Long-tailed Sylph

LC — Least Concern

Short-tailed river stingray

DD — Data Deficient

Physical Characteristics

Attribute	Long-tailed Sylph	Short-tailed river stingray
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.

Short-tailed river stingray

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.