I have gold fish out there in a small but very deep pond, two German sheps, one of them is black from top to toe and long haired and a 18 yr old yorkie, my wee one I found ages before in the woods. I don't own the birds in my garden nor the deer or foxes visiting me at winter but there are many kinds of birds who find water and food and I am watching the nests almost every day, they are rented again.
My German sheps could kill a robber anytinme but when they find a young blackbird or other birdie, they call me asap to help them.. they are great..err. pets and walk me every day.