Chestnut-breasted Cuckoo vs Long-tailed Sylph

Cacomantis castaneiventris compared with Aglaiocercus kingii

Taxonomic Classification

Rank	Chestnut-breasted Cuckoo	Long-tailed Sylph
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Aves (Birds)	Aves (Birds)
Order	Cuculiformes (Cuculiformes)	Apodiformes (Apodiformes)
Family	Cuculidae	Trochilidae
Genus	Cacomantis	Aglaiocercus
Species	Cacomantis castaneiventris	Aglaiocercus kingii

Evolutionary Relationship

Chestnut-breasted Cuckoo and Long-tailed Sylph share a common ancestor at the Class level: Aves. (Birds)

View Class: Aves

Conservation Status

Chestnut-breasted Cuckoo

LC — Least Concern

Long-tailed Sylph

LC — Least Concern

Physical Characteristics

Attribute	Chestnut-breasted Cuckoo	Long-tailed Sylph
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chestnut-breasted Cuckoo

Habitat

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

Range

Found in Norway.

Long-tailed Sylph

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Chestnut-breasted Cuckoo

The Chestnut-breasted Cuckoo (Cacomantis castaneiventris) is a species in the genus Cacomantis. It is currently classified as Least Concern on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

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.