I'll give you a clue:
No, well, he's attaching something to the wall...
Can you guess now?
And look at the little egg that was in the nesting box last night - we have normal chickens, three that lay smallish (maybe size 5 eggs), and three that lay much bigger ones (size 7ish)... so I don't know who crept in and laid this teeny tiny one? It's so cute