Chatham shag vs Long-tailed Sylph

Leucocarbo onslowi compared with Aglaiocercus kingii

Key Differences

• Chatham shag is Critically Endangered while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Chatham shag	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Suliformes (Suliformes)	Apodiformes (Apodiformes)
Family	Phalacrocoracidae	Trochilidae
Genus	Leucocarbo	Aglaiocercus
Species	Leucocarbo onslowi	Aglaiocercus kingii

Evolutionary Relationship

Chatham shag and Long-tailed Sylph share a common ancestor at the Class level: Aves. (Birds)

Conservation Status

Chatham shag

CR — Critically Endangered

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Chatham shag	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chatham shag

Habitat

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

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Chatham shag

The Chatham shag (Leucocarbo onslowi) is a species in the genus Leucocarbo. It is currently classified as Critically Endangered 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.