Long-tailed Sylph vs Mexican redknee

Aglaiocercus kingii compared with Brachypelma hamorii

Key Differences

• Long-tailed Sylph is Least Concern while Mexican redknee is Vulnerable.

Taxonomic Classification

Rank	Long-tailed Sylph	Mexican redknee
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Aves (Birds)	Arachnida (Arachnids)
Order	Apodiformes (Apodiformes)	Araneae (Araneae)
Family	Trochilidae	Theraphosidae
Genus	Aglaiocercus	Brachypelma
Species	Aglaiocercus kingii	Brachypelma hamorii

Evolutionary Relationship

Long-tailed Sylph and Mexican redknee share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Long-tailed Sylph

LC — Least Concern

Mexican redknee

VU — Vulnerable

Physical Characteristics

Attribute	Long-tailed Sylph	Mexican redknee
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.

Mexican redknee

Habitat

Typically found in terrestrial habitats from forests to deserts.

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.