Dils’ Grayling vs Long-tailed Sylph

Pseudochazara orestes compared with Aglaiocercus kingii

Key Differences

• Dils’ Grayling is Vulnerable while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Dils’ Grayling	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Lepidoptera (Butterflies & Moths)	Apodiformes (Apodiformes)
Family	Nymphalidae (Brush-footed Butterflies)	Trochilidae
Genus	Pseudochazara	Aglaiocercus
Species	Pseudochazara orestes	Aglaiocercus kingii

Evolutionary Relationship

Dils’ Grayling and Long-tailed Sylph share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Dils’ Grayling

VU — Vulnerable

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Dils’ Grayling	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dils’ Grayling

Habitat

Inhabits Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Bulgaria and Greece. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.