Sure. But evolution prefers to reuse rather then innovate, this can often lead to interesting limits. For example, we still have a blind spot where the optic ne

Sure. But evolution prefers to reuse rather then innovate, this can often lead to interesting limits. For example, we still have a blind spot where the optic nerve connects to the retina, in all this time we have not evolved a blind spot free eye. Thus I was wondering if there are some odd limitations in how big, how quickly a little eagle can evolve, vs what the giant raptors could do. It was basically evolutionary fan.fic.