I have 3 BO hens and they are about 35 weeks old. No eggs yet... They have been making a high-pitched cooing sound (different from their normal greeting) the past week or so. 2 of their combs and waddles are bright red, the one lady is still a little pale. They have plenty of food (and eat a lot of it), fresh water, a draft-free and vented coop. BUT, they hardly ever leave their perch, just to peck around the coop, and haven't been outside in a long time. Is there something I can do? What is the cooing sound? It sounds a bit like the velasa raptors on Jarassic Park.