Long-tailed Sylph vs Whiskered brome

Aglaiocercus kingii compared with Bromus grossus

Key Differences

• Long-tailed Sylph is Least Concern while Whiskered brome is Critically Endangered.

Taxonomic Classification

Rank	Long-tailed Sylph	Whiskered brome
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Aves (Birds)	Liliopsida (Monocots)
Order	Apodiformes (Apodiformes)	Poales (Grasses)
Family	Trochilidae	Poaceae (Grass Family)
Genus	Aglaiocercus	Bromus
Species	Aglaiocercus kingii	Bromus grossus

Conservation Status

Long-tailed Sylph

LC — Least Concern

Whiskered brome

CR — Critically Endangered

Physical Characteristics

Attribute	Long-tailed Sylph	Whiskered brome
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.

Whiskered brome

Habitat

Inhabits temperate broadleaf and mixed forests and temperate coniferous forests within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (5 countries) and North America (United States). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.