I've been gathering a few hollow logs for a little while, finally got motivated today to start turning them into bird boxes to hang in the back yard. I've always had around 20 assorted size nesting boxes in the yard which have housed quite a few broods of lorikeets, rosella's, sugar gliders, ducks, and possums. But they were all made of cheap ply and have fallen apart over the years. This should see them all replaced with more natural timber hollows. I'm hiring a cherry picker next week to give a few gums around the house a bit of a haircut, so I'll hang these new boxes then. To hang them I use a bit of fence wire through some garden hose so the wire doesn't ringbark the tree, and attach the wire with a trampoline spring so it can stretch as the tree grows. To stabilize the round log against the tree trunk, I screw a short length of pine baton either side of the nest box to form a V on the back of the hollow. There is one larger hollow that is a V shape that I'll try and mount horizontally for the Kookaburra's.