Beak trimming of laying hens and turkeys is practiced to reduce feather pecking and cannibalism in intensive systems, but causes pain and represents an attempt to address behavioral problems through mutilation rather than management.
Beak trimming, while intended to prevent worse welfare outcomes from feather pecking, itself causes pain and permanently alters a bird's primary sensory organ and feeding tool. Birds with trimmed beaks show different feeding behaviors and may have difficulty foraging effectively. The need for beak trimming reflects housing conditions that prevent adequate expression of natural behaviors, treating the symptom rather than the cause.