I have feeders outside with flat tops. I put a plant pot right in the middle of the top full of soil. No room for them to roost. Nothing gets into he food while your girls are out of the coop? How high up do you have the feeder.
I can only put it so high . I have been keeping my girls in lately mostly because of the weather. So maybe the rats have found a better buffet. I don't know anyone around here with chickens. Maybe they went back to the river where they came from. I haven't seen so many adults in last week...
I have the same one. My chickens lift feed up onto the lip of the elbow ( lower part) and then flick it out. The lower lip is full of pellets. And all over the coop floor. My chickens don't eat it up all the time. Rats jump right in the elbows and feast while the girls are in the run.
What do the Guineafowl do?
And the rats don't eat out of it so low to the ground. When my chickens are in the run they rats just go in the coop and have a feast.
I have a "rat proof" feeder that the rats stand on their hind legs and push the door open and hop in the trough. They also get into my Rent-a-Coop feeder with he large PVC elbows. They climb right in while my birds are in the run during the day. I've actually seen them on their hind legs...