Long-tailed Sylph vs Pallas's Leaf Warbler

Aglaiocercus kingii compared with Phylloscopus proregulus

Key Differences

• Long-tailed Sylph is Least Concern while Pallas's Leaf Warbler is Not Evaluated.

Taxonomic Classification

Rank	Long-tailed Sylph	Pallas's Leaf Warbler
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Apodiformes (Apodiformes)	Passeriformes (Songbirds)
Family	Trochilidae	Phylloscopidae
Genus	Aglaiocercus	Phylloscopus
Species	Aglaiocercus kingii	Phylloscopus proregulus

Evolutionary Relationship

Long-tailed Sylph and Pallas's Leaf Warbler share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Long-tailed Sylph

LC — Least Concern

Pallas's Leaf Warbler

NE — Not Evaluated

Physical Characteristics

Attribute	Long-tailed Sylph	Pallas's Leaf Warbler
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.

Pallas's Leaf Warbler

Habitat

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

Range

Found across Asia (Taiwan) and Europe (5 countries).

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.

Pallas's Leaf Warbler

Pallas's Leaf Warbler (Phylloscopus proregulus) is classified as Not Evaluated (NE) on the IUCN Red List. Not yet evaluated against IUCN Red List criteria. Conservation status remains to be determined.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway