My husband and I are new to raising chickens. We have a mixed flock of 8 different breeds. We have 2 hens of each breed (no, his name isn't Noah!). 11 of these hens are over 25 weeks old. We are getting one egg a day! We've been told that if the we keep mixed breeds together, they won't lay. I find that sort of preposterous but who knows! Any suggestions? We feed them Purina Layena and when we have eggs (store bought) we crush the shells and let them have that also. The chickens are eating us out of house and home with no return! Help!