animal coloring

>>8743896
It's due to our evolutionary history. Mammalians and their ancestors were rat-like creatures which needed to live in hiding from larger predators of that time (dinosaurs and modern birds). You don't need fancy colors underground or in bushes. That's also the reason why mammalian vision sucks (most have only blue and green pigments and poor spatial resolution).

>>8744102
what this guy said, mammals rely heavily on stealth and camouflage when hunting or hiding, bright colors are not very conducive to this goal

Question: how do these animals get their pigments. Like is there genetic,code that codes,for green feathers or some shit?

>>8746652
Bright coloration in birds is often due to nutrition. Birds obtain molecules with chromophoric parts from fruits, berries, coloful insects etc. Then they absorb and pack these molecules into their feathers. Flamingos get their red color from shrimps. But yeah, they need enzymatic machinery to process and pack these pigments.

"Metallic" shining colors in animals are achieved by special surface structures or wax/oil layers with different refractive indices. These colors are created by diffraction and interference.

>>8746652
Cont.

Most pigments that are absorbed from plant nutrition cause red, orange and yellow coloration. However, the absorbed and reflected wavelengths can be modulated by attaching these pigment molecules to proteins. By altering the amino acid composition of these proteins and mixing these proteins and pigments in certain ratios, animals can also generate green and blue colorations.

Color is not really a thing. It's just ability to reflect energy. And humans all have blood right underneath their skin, we the 'color' we have is blood color mixed with the color of skin tissue, which is heavily related to blood plasma.

Funny fact, all human pussies are pink inside.