Well, there were comments that there was digging going on, and I thought it unlikely.
You wouldn't dig with a front end loader, that would be the wide bucket on the front of a tractor, or backhoe. It appeared to me that they were moving rock with the front end loader, but more than likely not digging with it.
You would dig with the narrow bucket on the back of a backhoe, or tractor, IF the tractor has one. In this case, it would be possible that a backhoe attachment could be used by that tractor in the photo.