Blackish-headed Spinetail vs Long-tailed Sylph

Synallaxis tithys compared with Aglaiocercus kingii

Key Differences

• Blackish-headed Spinetail is Vulnerable while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Blackish-headed Spinetail	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Passeriformes (Songbirds)	Apodiformes (Apodiformes)
Family	Furnariidae	Trochilidae
Genus	Synallaxis	Aglaiocercus
Species	Synallaxis tithys	Aglaiocercus kingii

Evolutionary Relationship

Blackish-headed Spinetail and Long-tailed Sylph share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Blackish-headed Spinetail

VU — Vulnerable

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Blackish-headed Spinetail	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blackish-headed Spinetail

Habitat

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

Range

Distributed across Ecuador and Norway. 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.

Blackish-headed Spinetail

The Blackish-headed Spinetail (Synallaxis tithys) is a species in the genus Synallaxis. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

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.

Shared Countries

Both species can be found in 2 countries:

🇪🇨 Ecuador 🇳🇴 Norway