Integrating new chickens into an existing flock is a high-risk welfare event. Pecking order disputes cause injuries and stress, but careful management can minimise harm.
For laying hens and backyard flocks alike, integration is a significant welfare challenge. Hens prevented from escaping aggression suffer sustained fear and physical harm. Best practice involves introducing birds at night, providing multiple feeding and drinking stations to prevent resource guarding, and using vision barriers to allow familiarisation before contact. Flocks that are too small struggle to dilute aggression; larger groups offer more escape opportunities. Commercial producers integrating replacement pullets into laying flocks must plan carefully to avoid welfare crises that also reduce productivity.