Visiting kitten

There is a wild kitten that has been visiting the house. So we have been putting a bit of food and milk out for it and hope that it may eventually get to be a bit more friendly with us. At the moment it is very scared, but has come back regularly. It would be nice to have the cat hang around to catch mice and rabbits. (Yes, one job a cat has is to catch rabbits as they are such a pest. We could have 12 rabbits on our front lawn at one time - so a cat could come in handy).