Dwarf round ray vs Yellow-billed Cacique

Urotrygon nana compared with Amblycercus holosericeus

Key Differences

• Dwarf round ray is Near Threatened while Yellow-billed Cacique is Least Concern.

Taxonomic Classification

Rank	Dwarf round ray	Yellow-billed Cacique
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Aves (Birds)
Order	Myliobatiformes (Myliobatiformes)	Passeriformes (Songbirds)
Family	Urotrygonidae	Icteridae
Genus	Urotrygon	Amblycercus
Species	Urotrygon nana	Amblycercus holosericeus

Evolutionary Relationship

Dwarf round ray and Yellow-billed Cacique share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Yellow-billed Cacique

LC — Least Concern

Physical Characteristics

Attribute	Dwarf round ray	Yellow-billed Cacique
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Yellow-billed Cacique

Habitat

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

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Yellow-billed Cacique

Yellow-billed Cacique (Amblycercus holosericeus) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.