I've left it outdoors, and it's still working. I did cover the top (where the batteries are) with some plastic to prevent water from going in. It should work a

I've left it outdoors, and it's still working. I did cover the top (where the batteries are) with some plastic to prevent water from going in. It should work against birds, as long as the IR detector can sense a change. The bird must stay in one place for a couple of seconds at least.