Miss Piggy laying an egg on the dance floorAnd toward 6 this morning Lulu made noises that sounded more like à egg song and less like a pig/duck , and I found a cute little egg on the floor again.

I once read that someone had a similar problem and resolved it by putting a nestbox (carton) on the spot where the chicken laid her eggs.
If I remember correctly the person moved the box a few inches every day to the corner to resolve the problem.