Sammi's boxes 2020

Thanks GBH and Beechnut. Yes they do seem to fair badly in open fronted boxes. We have pans to build them a bit of a fortress around the box for next year. Like a little shed around the nest box with a wire front. If I had put the camera on early that day I probably would have caught the culprit. Any ideas who it might have been? No doubt my new camera will arrive tomorrow now.