Blue Gum vs Long-tailed Sylph

Eucalyptus leucoxylon compared with Aglaiocercus kingii

Key Differences

Blue Gum is Vulnerable while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Blue Gum	Long-tailed Sylph
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Aves (Birds)
Order	Myrtales (Myrtales)	Apodiformes (Apodiformes)
Family	Myrtaceae	Trochilidae
Genus	Eucalyptus	Aglaiocercus
Species	Eucalyptus leucoxylon	Aglaiocercus kingii

Conservation Status

Blue Gum

VU — Vulnerable

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Blue Gum	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Gum

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, montane grasslands and shrublands, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Afrotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Libya, South Africa), Asia (India), Europe (France, Malta), and South America (Brazil). 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.

Blue Gum

The Blue Gum (Eucalyptus leucoxylon) is a species in the genus Eucalyptus. It is currently classified as Vulnerable on the IUCN Red List. Found across multiple habitat types including tropical and subtropical moist broadleaf forests, montane grasslands and shrublands, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Afrotropic and Palearctic .

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.