Mine have been doing this too! They woke me up at 4.30 the other morning, I shot out of bed in a panic as we have had a fox visit fairly recently, but nothing going on, and the other pair were out in their run so obviously no fox around. Then a couple of days later some bun was at it again just after midnight. I went out with a fenugreek crunchie for everybun to quieter them down, seemed to work, just hope they don't get wise to it! :roll: