Usually, the white doves are pets, sold at a pet store and they are very friendly, but even a wild one can become a pet. Years ago a friend of mine had 2 wild doves she found and they were very very friendly. She would let them fly free in the day and then ever night just before dark they come to the window and want to be let back in their cage. So I would think he would have to had been a pet at some point in his life. I just can't see a wild dove being that people friendly.

It's a shame for him, that he is that friendly, he's more likely to get hurt. But atleast you got a chance to pet him and maybe get over a little of your fears.

Someone needs to catch him if he is that friendly and give him a good home where he can be safe.