The hedgehogs are long gone, now able to feed on other than the cat food we left out, but I spotted a bumblebee coming in and out of one of our stone walls: time to deploy hogcam. I swapped the camera for the IR-filtered one, and set it up facing the hole and left it running for a while:
I’ve had to crop them and highlight the bees. These photos were taken minutes apart; hundreds of blank wall shots were produced. I’ve also edited these to increase the contrast in general, along with cropping off some junk at the bottom.
Conclusion: I’ll stick with Hedgehogs!