I often joke about paint specifications, which frequently have a list of things that are to be painted, along with another list of things that are
not to be painted. It seems no matter how many items are in each list, the painter will ask about something else.
That brings to mind the military maxim: "If it moves, salute it. If it doesn't move, paint it." And that can be reduced to, "If it doesn't move, paint it."
It appears the painter on this project took that seriously.
Look at all that nice, white paint! But what's that round thing where the wall meets the ceiling?
A bird nest! Well, it wasn't in the list of "do not paint"...