What kind of bird is this

by Wendy
(Bethlehem,Pa)

This bird showed up about 3 weeks ago. I assumed that it was a homeing pigeon but from all the images I have seen, I haven't found one like this. Some people say he looks like an owl, others say he looks like someone's pet. He is white with black spots but his neck and head look like he is wearing a fur hood. During the day he hangs out on the roof of my garage and at night he sleeps on the ledge of the garage window. I have put water in a small bowl for him and I have also given him rice and popcorn . He does not have any kind of band on his leg. Any information would be greatly appreciated. I