Long-tailed Sylph vs thin-necked bladderworm

Aglaiocercus kingii compared with Taenia hydatigena

Key Differences

• Long-tailed Sylph is Least Concern while thin-necked bladderworm is Not Evaluated.

Taxonomic Classification

Rank	Long-tailed Sylph	thin-necked bladderworm
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Platyhelminthes (Platyhelminthes)
Class	Aves (Birds)	Cestoda (Cestoda)
Order	Apodiformes (Apodiformes)	Cyclophyllidea (Cyclophyllidea)
Family	Trochilidae	Taeniidae
Genus	Aglaiocercus	Taenia
Species	Aglaiocercus kingii	Taenia hydatigena

Evolutionary Relationship

Long-tailed Sylph and thin-necked bladderworm share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Long-tailed Sylph

LC — Least Concern

thin-necked bladderworm

NE — Not Evaluated

Physical Characteristics

Attribute	Long-tailed Sylph	thin-necked bladderworm
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.

thin-necked bladderworm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden.

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 1 countries:

🇳🇴 Norway