I'd already been round the garden to see what other clues there were and, while in an area of trees, I came across a number of holes tucked away at the top of the garden:
You can probably estimate that these holes were between 20-30cm across. To see if the holes were still active, we put a stick across one as you can see in the last picture.
We suspected badgers as the prime candidate, but suspecting is one thing; having photographic evidence is quite another, so I set up the Trail Camera on the tree on the left in the first picture to see what was doing the digging. For a number of nights I didn't see anything on the camera (despite seeing that nuts and dried fruit put out in front of the camera were being eaten!) This increases my confidence that the sensor for the trigger on the camera is not sensitive enough but reading another users' experiences with the camera I decided to persevere this time trying video rather than still shots. The first night I tried this produced this rather fine example:
Still no evidence of activity from around the holes but that is where the camera is now situated, so I will leave it for a week or so and see what I can see by the weekend.
Well, it's Thursday night, and I scattered a few old walnuts around and set the camera up again. This time I put a sheet of metalized anti-static plastic across the Infra Red LED's to reduce the light output and hopefully improve the pictures. As suggested by Ron Bury on a previous post I punched a hole in the sheet to leave the daylight sensor fully exposed to the light in the garden.
I was rewarded by two decent films of a badger again. They're linked below for your pleasure: