Long-tailed Sylph vs Serotine

Aglaiocercus kingii compared with Eptesicus serotinus

Key Differences

• Long-tailed Sylph is Least Concern while Serotine is Vulnerable.

Taxonomic Classification

Rank	Long-tailed Sylph	Serotine
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Apodiformes (Apodiformes)	Chiroptera (Bats)
Family	Trochilidae	Vespertilionidae
Genus	Aglaiocercus	Eptesicus
Species	Aglaiocercus kingii	Eptesicus serotinus

Evolutionary Relationship

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

Conservation Status

Long-tailed Sylph

LC — Least Concern

Serotine

VU — Vulnerable

Physical Characteristics

Attribute	Long-tailed Sylph	Serotine
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.

Serotine

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (7 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Serotine

Serotine (Eptesicus serotinus) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway