Behavioural tests on hens from different light treatments

These are video files of behavioural tests conducted on laying hens in early/peak production that were housed with different light treatments including ultraviolet light. \nLineage: Hens were housed with different supplemental lights in their home pens then a subset were periodically individually tested in behavioural tests of tonic immobility and open field. The supplemental lights were turned off to induce potential stress and a subset of hens were tested in attention bias tests both prior to and during the stressor period.