My family had chickens growing up. We never had problems with Evotard screwing our chickens, but there is a thing called predator awareness that always occurred at some point. A predator or predators would become aware of the chickens and do everything to get them. Suddenly every night was war at the chicken coop and sleep was impacted. Typically it was Raccoon and even when my dad blasted them with his shotgun, they would be back eventually. In the end, the regular battle with predators made the effort not really worthwhile. We lived in a brushy area, if we had flat wide open ground it may have been different and easy to control.