One day during our Easter holiday, we were sitting on our little terrace in the sunshine enjoying a piece of cake and a cuppa with our friends Tim and Pauline, when I noticed something unusual going on behind me.
Moments later it returned and then flew out head first. Which means it must have gone in backwards, I suppose.
Closer inspection revealed that the bee was filling the hole up with deposits of a sandy-looking substance.
Tim and Pauline then told us it was a mason bee.
By the next afternoon, the hole was completely closed up. According to Wikipedia , there should now be a stash of nectar or pollen in the hole, with an egg laid on top.
It will be interesting to see if the plug is still there in the hole when we are next chez nous, or if other holes have been adopted and become the homes of little baby mason bees.