Perch access is a fundamental welfare requirement for laying hens, but poorly designed perches cause keel bone fractures, foot injuries, and social stress, making perch design a critical and often overlooked component of hen welfare in enriched systems.
Perch design is a deceptively technical welfare issue: providing perches is necessary but insufficient — poorly designed perches create new welfare problems while technically meeting regulatory requirements. The evidence on keel bone fractures shows clearly that perch height, positioning, and surface texture significantly affect injury rates. Hens that fracture their keels landing from excessive heights suffer chronic pain that impairs their ability to compete for resources, roost normally, and maintain normal activity. The welfare investment in correct perch design pays dividends throughout the flock's productive life in reduced injury rates, better mobility, and improved feed access. Producer guidance on optimal perch specifications should be provided by welfare extension services alongside minimum regulatory standards.