Fish-bone Cassia vs Long-tailed Sylph

Chamaecrista mimosoides compared with Aglaiocercus kingii

Taxonomic Classification

Rank	Fish-bone Cassia	Long-tailed Sylph
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Aves (Birds)
Order	Fabales (Legumes & Allies)	Apodiformes (Apodiformes)
Family	Fabaceae	Trochilidae
Genus	Chamaecrista	Aglaiocercus
Species	Chamaecrista mimosoides	Aglaiocercus kingii

Conservation Status

Fish-bone Cassia

LC — Least Concern

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Fish-bone Cassia	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Fish-bone Cassia

Habitat

Inhabits tropical and subtropical moist broadleaf forests and montane grasslands and shrublands spanning the Australasia and Indomalayan and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Comoros, Guinea, Madagascar), Asia (4 countries), and Oceania and the Pacific (6 countries).

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.