Feathered birds come in a rainbow of colors, why do we not see that same kind of variation among haired animals?
In: Biology
They’re colour blind!
Most mammals only have two colour receptors. They can see blue/yellow but cannot tell the difference between red/green. Because of this it is not worth being brightly coloured and better to spend the energy somewhere else (for example scent).
Primates evolved a third colour receptor, so we can see more colours and appreciate birds and flowers to some extent.
Birds actually have four colour receptors. So to a bird, you are colour blind and are not fully appreciating their beauty.
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