Three old oaks grow in front of our house. There are hollows in them, where sometimes birds settle in spring. A cat lived in a large hollow of one of them. One day she brought a small kitten out of the hollow. So then she took them to the hollow again The children from the neighbourhood have great fun. Even they want to feed the little kitty. I have never seen cats born on trees. I noticed that the mother of these kittens cares very much for them.