Chicken feed bucket spill blocker

I have a bucket with curved pvc tubes in it I use as a chicken feeder. They would rather scratch so they dump as much out as they can which leads to a lot of waste.

This blocks the bottom portion of the tube so it is more difficult to dump out, and they should just eat out of the bucket. You can easily just run a screw through the plastic or glue it. I made it out of pla because that's all I had laying around and they've lasted over a year so far with no degradation, but I would recommend something that works better in sunlight.

These are made for a 4.5" dia tube (115mm) but scale to whatever size you need

The photo shows some grain spilled out but its better than before I installed it by a lot