we have our duck pen connected to a shed where they can enter to eat. Something for the last 2 days has entered the shed through the pen, eats food (not a lot either) but poops like no other. It kinda looks like dog poop and mushie together. And it’s a lot! Whatever is getting in has got to go through the10 by 10 dog pen that we thought was unpenturable. We see now the 4 top corners have a space your fist can go through. But the thing is it’s not doing a thing to the ducks even though they have to go in their part to get in to shed. anyone know what would do this. I thought just about anything would go after a duck. We are thinking possum but I’m not sure if they are meat eaters or not. I’m going to look that up now and see if I can also see their poop! We are thinking of putting a go pro in there. I have had ducks for 3 yrs without one single problem!