FunClucks
Crowing
I'd definitely put a lot more clutter in your run. Hanging food to peck, things to scratch around in, grazing boxes, think 3 dimensional and breaking up the line of sight without creating dead ends. It can be as simple as a whole apple or cucumber or head of cabbage on a string. Amazon has a great chicken skewer for hanging food. I'd definitely suspect boredom played into their behavior.
https://www.amazon.com/Chicken-Vege...445199&sprefix=chicken+skewers,aps,101&sr=8-7
https://www.backyardchickens.com/ar...ke-your-run-more-fun-for-your-chickens.67370/
https://www.backyardchickens.com/threads/a-cluttered-run.1323792/
https://www.amazon.com/Chicken-Vege...445199&sprefix=chicken+skewers,aps,101&sr=8-7
https://www.backyardchickens.com/ar...ke-your-run-more-fun-for-your-chickens.67370/
https://www.backyardchickens.com/threads/a-cluttered-run.1323792/