Modern egg production separates hens from their eggs at laying, preventing all maternal behavior. Research on hen-chick relationships reveals sophisticated bonding behavior that industrial systems permanently prevent.
The disruption of hen-chick relationships in industrial egg production prevents the expression of one of the most fundamental avian social behaviors. The evidence for hen empathy toward chick distress — demonstrated by physiological and behavioral responses — suggests that maternal care has genuine emotional content for hens. Hens prevented from expressing broody behavior may experience frustration of a strong behavioral drive. Chicks deprived of maternal contact miss critical socialization that affects their behavioral development and welfare throughout life. This dimension of poultry welfare is rarely discussed in consumer-facing welfare communications but represents a significant and near-universal welfare cost of industrial egg production.