Black-billed Gull vs Long-tailed Sylph

Chroicocephalus bulleri compared with Aglaiocercus kingii

Key Differences

• Black-billed Gull is Not Evaluated while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Black-billed Gull	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Charadriiformes (Charadriiformes)	Apodiformes (Apodiformes)
Family	Laridae	Trochilidae
Genus	Chroicocephalus	Aglaiocercus
Species	Chroicocephalus bulleri	Aglaiocercus kingii

Evolutionary Relationship

Black-billed Gull and Long-tailed Sylph share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Black-billed Gull

NE — Not Evaluated

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Black-billed Gull	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-billed Gull

Habitat

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

Range

Found in Norway.

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Black-billed Gull

The Black-billed Gull (Chroicocephalus bulleri) is a species in the genus Chroicocephalus. 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 1 countries:

🇳🇴 Norway