Peruvian Black Spider Monkey that is one of the rarest monkey species in the world, also has one of the rarest primate eye colors in the world. It's rarity is absolutely 🔥 :
Why don't other individual primate species show the range of skin colors that Homo sapiens displays? - Quora
The evolutionary drivers of primate scleral coloration | Scientific Reports
Color patterns of monkey faces reflect social order - Futurity
Why don't other individual primate species show the range of skin colors that Homo sapiens displays? - Quora
2 Color signals of dominance in the male mandrill. Image (a) shows a... | Download Scientific Diagram
Monkey Colors – Charlesbridge
Why Monkeys and Apes Have Colorful Faces | Live Science
Study finds facial coloration in old world monkeys related to environment and social factors
The Brutal Reason Some Primates Are Born a Weird Color | WIRED
Some Monkeys Have Blue Testicles—Here's Why
REVEALED: Peculiar Reason Primates Have Such Colorful Faces | HuffPost Impact
Why are some primate infants brightly colored?
On the Origin of Colourful Monkey Faces
The Colours of a Primate Rainbow: Interview with Dr. Amanda Melin | Field Projects International
Black howler monkey | Smithsonian's National Zoo
Full Colors Rainbow Of Mandrill Monkey Face Stock Photo - Download Image Now - Animal, Mandrill, Multi Colored - iStock
A New Kind of Monkey, With Colors That Set It Apart - The New York Times
Evolution of color vision in primates - Wikipedia
Black Monkeys | Types of Black Monkeys | BioExplorer.net
