My childen do that as well. I have always heard that children can see and sense spirits....not necessarily ghosts....that we can't. It's not really that we can't. It's more like we forgot how to. We grew up and we stopped believing so when our children point at things and chatter away we are wondering what they are chattering to. They are chattering to what we no longer perceive. Unless what they are talking to is a threat. In which case they would let you know. Children have a very good sense of chararcter and an even better sense of energy. They can sense something malicious and they react accordingly. Night terrors, screaming hysterically, unexplained fear of a spot in the house or yard or anywhere. We are all born aware. We lose that awareness because we are taught to lose it. Mothers have an extrasensory perception anyway because it instinctively kicks in when we get pregnant. It's a protective mechanism. Vampyre mothers tend to become very aggressive when they feel energy flunctuations. So if there was something there to harm your little one he would let you know, but there is a good chance that you would know already. He's just building a repertoire with something that likes him.
My two do this all the time. My youngest twin talks to trees. He loves them and always has. When he was a little thing he had to have the blinds open immediately when he awoke so that he could see the tree outside his window.
