I am taking care of my neighbors chickens and twice now I have caught Lady Wellington, a blue andalusian mounting their buff orp hen. they are the same age and have both been laying for 2-3 weeks. There are 9 young hens total, with space of 10 ft by about 20 feet for run. forage time in yard daily. So, is there something that they can do when they get home to stop this behavior? maybe a few days timeout in the garage?