Forrest's Hemlock vs Long-tailed Sylph

Tsuga forrestii compared with Aglaiocercus kingii

Key Differences

• Forrest's Hemlock is Vulnerable while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Forrest's Hemlock	Long-tailed Sylph
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Coniferophyta (Conifers)	Chordata (Chordates)
Class	Pinopsida (Conifers)	Aves (Birds)
Order	Pinales (Pines & Allies)	Apodiformes (Apodiformes)
Family	Pinaceae (Pine Family)	Trochilidae
Genus	Tsuga	Aglaiocercus
Species	Tsuga forrestii	Aglaiocercus kingii

Conservation Status

Forrest's Hemlock

VU — Vulnerable

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Forrest's Hemlock	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Forrest's Hemlock

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Range

Found in Taiwan. 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.

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.