The osprey has a great color vision, so is their ancestors.
The CYP2J19 gene first appeared and 250 million years ago, around the end of the Permian era when a series of species became extinct. And continued to exist in the evolution of lizard lizards (including lizards and turtles), later birds and alligators and non-bird dinosaurs.
"These results are evidence that the 'red gene' has been developed from an ancient dinosaur," concluded Professor Nick Mundy.
Birds have the ability to see many different shades of red than humans. It is like people looking at many red, blue and green spectra. Most likely, the old dinosaurs were also able to see so many red spectra .
The ancestors of turtles are the first species to develop "red genes".
Interestingly, scaly reptiles as well as snakes have separated from the lizard species before turtles, and before the emergence of the CUP2J19 gene. So they do not have the ability to see red.
But the crocodile set from the lizard still retains CYP2J19, but natural selection has removed this gene because it is not necessary for crocodile survival.
Most modern birds have a very good color vision and they are closer to dinosaurs than crocodiles. And if the bird's ancestors were the same, it is very likely that the dinosaurs not only saw this world under each red light, but also blue, blue and many other shades.