Feather pecking is a major welfare problem in laying hen flocks causing injury, pain and death. Its complex causation and the interventions used to manage it raise important welfare questions.
Feather pecking creates a welfare dilemma: the behavior causes significant suffering in targeted birds, but the main management intervention - beak trimming - also causes welfare harm to all birds. In severe outbreaks, targeted hens suffer progressive skin damage, blood loss and stress from constant attack. Death from pecking is not uncommon. Beak trimming reduces injury risk but removes a sensitive organ containing pain receptors - infrared trimming causes less chronic pain than blade trimming but still involves welfare compromise. The underlying causes of feather pecking - barren environments, high stocking density, and nutritional factors - represent system-level welfare failures that beak trimming cannot address. Reducing feather pecking at its source through environment and management improvement is welfare-superior to treating the symptom.