It's driving me mad!!!!!
Always I'm the same corner, like a tapping and scratching noise.
Same time every night, starts about 10ish, but last few nights has been through the night.
No dropping of any kind in the loft and cardboard boxes have no evidence of been chewed.
Do sometimes find empty birds eggs in the garden at certain times of year.
What's this likely to be and how do I make it stop?