Feather pecking in laying hens causes significant injury and welfare harm, and addressing its multiple causes requires both management and genetic approaches rather than beak trimming alone.
Feather pecking is a welfare problem with complex causes that beak trimming addresses only symptomatically and at welfare cost. Trimming a sensitive beak to prevent the behavioral consequence of an inadequate environment leaves the underlying welfare problem unresolved while adding a new one. Genuine feather pecking prevention requires addressing the nutritional, environmental, and management factors that drive the behavior — adequate space, foraging substrate, appropriate light, suitable stocking density, and breed selection. The shift toward beak-intact flocks in some high-welfare systems demonstrates that feather pecking can be managed without mutilation in appropriately designed systems.