Mice in bird aviary....how can i get rid of them?

If you have a car port and are able to move the aviary, move it onto the concrete. Or find the holes they have dug into it and place poison on the outside of the aviary. Or you could place a cage inside the aviary with poison in it where the birds can not get in it but the mice can. then simply wait and watch and remove any dead mice you find in there, but they will probably go outside of it to die instead of dieing where they are living. Usually mice will go away from their food source to die from poison.