Laying hens have a tendency to peck, which, if redirected to the plumage and skin of other birds, leads to injury. ‘Injurious pecking’ is defined by FeatherWel1 as comprising gentle and severe feather pecking, vent pecking and cannibalism. If left unchecked, it can lead to substantial feather loss, serious injury and death, and potentially, significant welfare and economic implications.....