Chicken Feeder Cover

I made this to bond to a 4 inch PVC pipe that I fashioned into a Chicken food holder. I cut an oval opening in the tube to present the food to the chickens. It is similar to the one in the photo.
However, as chickens do, they perched on top of the tube and pooped into the food below. This shields the food... It works great. I glued it with silicone caulking, and it has held up fine.