Jackson'S Slender Caesar vs Long-tailed Sylph

Amanita jacksonii compared with Aglaiocercus kingii

Key Differences

• Jackson'S Slender Caesar is Not Evaluated while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Jackson'S Slender Caesar	Long-tailed Sylph
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Aves (Birds)
Order	Agaricales (Gilled Mushrooms)	Apodiformes (Apodiformes)
Family	Agaricaceae (Agarics)	Trochilidae
Genus	Amanita (Amanitas)	Aglaiocercus
Species	Amanita jacksonii	Aglaiocercus kingii

Conservation Status

Jackson'S Slender Caesar

NE — Not Evaluated

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Jackson'S Slender Caesar	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Jackson'S Slender Caesar

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Found in United States.

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.