4 ms·
Because they're carnivores. Mammals evolved in the Jurassic as nighttime creatures, because warm blood gave them an advantage over reptiles, and they lost color
by bonzini 4y ago
Because they're carnivores. Mammals evolved in the Jurassic as nighttime creatures, because warm blood gave them an advantage over reptiles, and they lost color vision in exchange for better nighttime vision. Once dinosaurs disappeared mammals no longer had to restrict themselves and could occupy new niches. That's when primates got color vision back, to be able to distinguish ripe fruits.
- zeristor 4y agoCue to post a link to the Quanta magazine article on how Chickens have dinosaur eyes, and didn’t have to evolve to night time use and back like mammals: https://www.quantamagazine.org/hyperuniformity-found-in-birds-math-and-physics-20160712/ https://www.quantamagazine.org/hyperuniformity-found-in-bird... Now if the genetics could be transferred back to mammals things might look different, assuming the brain and optic nerve are still up to it.