“Hens Hatched on Farms Show Adaptation Differences in Laying Barns, with Longer Behavior Establishment and More Severe Keel Bone Fractures”

https://pubmed.ncbi.nlm.nih.gov/38117840

Hens hatched in an on-farm environment transition less between tiers and spend less time on the littered floor in the laying barn, but require a longer period to establish daily behavioral patterns and have more severe keel bone fractures, supporting the environmental matching hypothesis.