Cuatro Ojos vs Reyezuelo Sencillo

Aotus nigriceps compared with Regulus regulus

Key Differences

• Cuatro Ojos is Least Concern while Reyezuelo Sencillo is Vulnerable.

Taxonomic Classification

Rank	Cuatro Ojos	Reyezuelo Sencillo
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Mammalia (mamíferos)	Aves (Birds)
Order	Primates (Primates)	Passeriformes (paseriformes)
Family	Aotidae	Regulidae
Genus	Aotus	Regulus
Species	Aotus nigriceps	Regulus regulus

Evolutionary Relationship

Cuatro Ojos and Reyezuelo Sencillo share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Cuatro Ojos

LC — Least Concern

Reyezuelo Sencillo

VU — Vulnerable

Physical Characteristics

Attribute	Cuatro Ojos	Reyezuelo Sencillo
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cuatro Ojos

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Reyezuelo Sencillo

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Russia, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Cuatro Ojos

The Black-headed Night Monkey (Aotus nigriceps) is a species in the genus Aotus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Reyezuelo Sencillo

El Reyezuelo Sencillo (Regulus regulus) está clasificado como Vulnerable (VU) en la Lista Roja de la UICN. Enfrenta un alto riesgo de amenaza en estado silvestre, con poblaciones en declive y creciente presión sobre su hábitat.