We have our first set of chicks which are just about ready to ditch the brooder and head outside full time (6-7 weeks). Currently our five chicks are outside from 7:00am-7:30pm. At 7:30pm, as the sunsets, they start their distress call, instead of heading up to the roost area to sleep. They are SO loud! How do I move them towards a happy life in their hen house without their panicked calls?