Long-tailed Sylph vs Nilgiri langur

Aglaiocercus kingii compared with Semnopithecus johnii

Key Differences

• Long-tailed Sylph is Least Concern while Nilgiri langur is Vulnerable.

Taxonomic Classification

Rank	Long-tailed Sylph	Nilgiri langur
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Aves (นก)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Apodiformes (Apodiformes)	Primates (อันดับวานร)
Family	Trochilidae	Cercopithecidae (Old World Monkeys)
Genus	Aglaiocercus	Semnopithecus
Species	Aglaiocercus kingii	Semnopithecus johnii

Evolutionary Relationship

Long-tailed Sylph and Nilgiri langur share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Long-tailed Sylph

LC — Least Concern

Nilgiri langur

VU — Vulnerable

Physical Characteristics

Attribute	Long-tailed Sylph	Nilgiri langur
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.

Nilgiri langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.