A method of rearing chickens comprises providing a chicken shed (10) having afloor area (12) over which the chickenscan move freely. The shed (10) is provided with a plurality of lights (18)arranged to illuminate respective different regions ofthe floor area ( 12) so that, collectively, the lights (18) are able toilluminate substantially all of the floor area (12). The shed (10) isprovided a plurality of cameras (20) arranged to view respective differentregions of the floor area (12) so that, collectively, the cameras(20) are able to view substantially all of the floor area (12). Chickens areprovided in the livestock shed (10) on the floor area(12). A controller (22) is provided and is operatively connected to the lights(18) and to the cameras (20). The controller (22) receivesand analyses signals, such as images, from the cameras (20). The controller(22) controls the lights (18) to adjust illuminationprovided to the floor area (12) by the controlled lights (18) in a mannerdependent on the signals from the cameras (20). The controller (22)is able to control each light (18) independently of the other lights (18). Insome situations, the control of the lights (18)causes a predetermined desired response in the chickens. In some cases, thepredetermined desired response overcomes or circumventsan undesirable situation recognised by the controller from analysis of thesignals from the cameras (20).
