Black Muntjac vs Long-tailed Sylph

Muntiacus crinifrons compared with Aglaiocercus kingii

Key Differences

• Black Muntjac is Vulnerable while Long-tailed Sylph is Least Concern.

Taxonomic Classification

Rank	Black Muntjac	Long-tailed Sylph
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Aves (นก)
Order	Artiodactyla (อันดับสัตว์กีบคู่)	Apodiformes (Apodiformes)
Family	Cervidae (Deer)	Trochilidae
Genus	Muntiacus	Aglaiocercus
Species	Muntiacus crinifrons	Aglaiocercus kingii

Evolutionary Relationship

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

Conservation Status

Black Muntjac

VU — Vulnerable

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Black Muntjac	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Muntjac

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Long-tailed Sylph

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Black Muntjac

The Black Muntjac (Muntiacus crinifrons) is a species in the genus Muntiacus. It is currently classified as Vulnerable on the IUCN Red List. 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.