Di - that reminds me of what my birds do when the dogs poop in their room.  Whenever I return home from errands, my birds start yelling and whistling for me.  But if the dogs poop in their room (which they do once or twice a month on the average), the birds are silent.  I walk over to their doorway, and they are all looking down at the poop on the floor, and then at me.  Like, "look at that awful mess on our floor."   
 I don't bother to try to correct my dumb dogs any more.  They're hopeless.
 As a matter of fact, the birds have tile on their floor, and I'd rather they use that floor as a bathroom, instead of our hardwood flooring in the rest of the house.  I think they could hold it, but they've been so spoiled by my husband.  He never would correct them for misbehaving, and he created 2 little stinkers.