FACTS ABOUT BIRD REVEALED

Birds have acute eyesight—raptors (birds of prey) have eyesight eight moments sharper than individuals—owing to bigger densities of photoreceptors while in the retina (up to 1,000,000 per sq. mm in Buteos, when compared with two hundred,000 for individuals), a higher quantity of neurons while in the optic nerves, a 2nd list of eye muscles not l