Snapdragyn
Explorer
You can't really get any better at perception.
You are obviously not a birder. I can tell you from my own RW experience in birding that yes, you can indeed get better at perception - both visual & auditory. Learning where to look (most likely places for things to be), what to look for (pattern recognition), & how to look (a soft-focus scanning for movement vs. sharp-focusing on specific odjects), as well as what to listen for (pattern recognition again), have made a significant difference in my ability to notice what birds are around. I've been in situations where non-birders, untrained in these aspects of perception, would tell me there were 'no birds around', when I would then proceed to find several species.