We have two barred rock chicks that are now five weeks old. Just in the last few nights, they have begun chirping very loudly. It is maddening the way they go on and on. They appear to be healthy, eating and drinking well. We leave their red light on during the night. It's just weird that it just started now. They go out during the day and completely ignore us. It seems like they want attention as they quiet down when picked up, but we can't do that all night. Any suggestions?