Feather Pecking and Aggression in Laying Hens

Feather pecking causes significant injury and welfare harm in laying hen flocks; provision of appropriate enrichment, foraging substrate, and breed selection reduces incidence substantially.

Key Facts

Feather pecking affects up to 40% of hens in commercial laying flocks
Severe feather pecking leads to open wounds, secondary infections, and cannibalism in extreme cases
Beak trimming is practiced to reduce injury severity but does not address the underlying behavioral drive
Providing foraging materials, adequate space, and appropriate pecking substrates reduces feather pecking significantly
Some laying hen breeds are selected for lower feather pecking propensity, offering genetic solutions

Welfare Considerations

Feather pecking represents a misdirected foraging behavior arising from environments that deny natural substrate pecking. Just as tail biting in pigs reflects frustrated rooting, feather pecking reflects frustrated pecking and foraging behavior in hens denied appropriate outlets. Beak trimming, the standard industry response, prevents injury without addressing the underlying welfare deficit. Systematic provision of foraging materials, dustbathing areas, and appropriate space eliminates feather pecking as the primary problem rather than managing its consequences.

What You Can Do

Support laying hen welfare standards that require foraging materials and adequate space
Choose eggs from farms certified to standards prohibiting beak trimming
Advocate for mandatory enrichment provision as an alternative to routine beak trimming
Support research on low-feather-pecking breeds as a genetic approach to prevention
Engage with food companies to require foraging material provision in their egg supply chains