Hen Aggression and Feather Pecking Prevention

Injurious feather pecking is a major welfare problem in laying hen production, causing pain and sometimes death, with root causes in frustrated natural behaviours and social stress.

Key Facts

Injurious feather pecking affects up to 50% of hens in some free-range flocks
Severe pecking can cause wounds, secondary infection, and cannibalism
Root causes include insufficient foraging enrichment, high stocking density, and feed composition
Beak treatment reduces injury risk but does not address root causes
The Dutch Kipster model has achieved near-zero feather pecking through holistic management

Welfare Considerations

Feather pecking welfare harm is both the cause and effect of poor welfare: hens in barren, overcrowded environments direct frustrated foraging at each other, causing pain and injury; injured hens are targeted further, creating welfare spirals. Root cause management — litter enrichment, appropriate stocking density, adequate foraging substrate, and red light management — can virtually eliminate feather pecking. The welfare case for root cause intervention is superior to beak treatment alone, which removes the target without addressing the drive.

What You Can Do

Choose eggs from farms with feather pecking prevention programmes beyond beak treatment
Advocate for root cause management requirements in laying hen welfare standards
Support Dutch Kipster model research and adaptation to UK conditions
Engage supermarkets on their feather pecking reduction commitments in egg supply
Reduce egg consumption to incentivise investment in welfare-positive flock management