Perching Behavior in Laying Hens and Welfare

The motivation to perch is strong in laying hens; providing adequate perching space and appropriate perch design satisfies this fundamental behavioral need.

Key Facts

Jungle fowl ancestors perch overnight to avoid ground predators; this behavior is retained in domestic hens
Hens strongly prefer to roost elevated at night regardless of cage versus cage-free housing
Inadequate perching space causes competition and injury in aviary systems
Perch design including diameter, surface texture, and height determines welfare quality
Keel bone fractures are influenced by perch design, with rounded perches reducing fracture risk

Welfare Considerations

Perching represents one of the strongest motivated behaviors in laying hens and one that was entirely prevented by battery cage systems. The transition to cage-free and aviary systems restores perching opportunity, but the quality of that opportunity depends critically on system design. Inadequate perch space creates competition that drives aggression and injury. Perch height and surface texture influence keel bone fracture risk. Well-designed aviary systems with appropriate perch number, diameter, and spacing achieve good perching welfare while poorly designed systems replace battery cage problems with new ones.

What You Can Do

Support cage-free and aviary systems that include specific perch design and space requirements
Advocate for perch design standards in aviary welfare certification
Support research on optimal perch design for minimizing keel bone fractures
Choose eggs from farms certified to welfare standards with specific perch requirements
Engage with the nuances of aviary welfare design beyond simple cage-free status