There is definitely something prey-like in the bush outside the window. Hobbes was VERY interested in something outside the bedroom window, last night. And I woke up at 3 am with Circe swatting at the window, making a thumping noise as she tried to get it. This was repeated several times during the night.
Then again, I don't want to induce whatever it is to try to move inside, either.
I can only hope it's not the possums, come back. I remember some years back, when I heard a rustling in the bush one night, and looked out the window into the face of a possum.