Long-tailed Sylph vs Red-eyed Treefrog

Aglaiocercus kingii compared with Agalychnis callidryas

Taxonomic Classification

Rank	Long-tailed Sylph	Red-eyed Treefrog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Amphibia (Amphibians)
Order	Apodiformes (Apodiformes)	Anura (Frogs & Toads)
Family	Trochilidae	Phyllomedusidae
Genus	Aglaiocercus	Agalychnis
Species	Aglaiocercus kingii	Agalychnis callidryas

Evolutionary Relationship

Long-tailed Sylph and Red-eyed Treefrog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Long-tailed Sylph

LC — Least Concern

Red-eyed Treefrog

LC — Least Concern

Physical Characteristics

Attribute	Long-tailed Sylph	Red-eyed Treefrog
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.

Red-eyed Treefrog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico.

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.