This morning I heard a Great Spotted Woodpecker – that is: I heard it hammering, but could not see it. Walking around the tree I thought “If it’s not on the outside, it must be on the inside”. Pretty clear thoughts for an early morning walk 😉 . Indeed it was. It was digging a nesting hole, disappearing inside for some minutes, hammering away. When there was too much debris, it cleared the hole. Mostly by throwing wood out, sometimes coming out completely for a rest and some cooling down. Fun to see, and I came to appreciate the hard labour !