LED lighting initially costs more than traditional lights but saves enough energy to offset the cost in the long run. Different LED lighting has different effects on chickens. Red light creates more pecking and excites birds, while blue and green lighting has a calming effect on them. A white light that slowly lights up in the morning and slowly shuts off in the evening, to mimic the rising and setting of the sun, had an effect on when birds would eat and reduced stress caused by lights flicking on and off.