I have 3 hens and 2 roosters in a 14' x 12' pen with a 6' x 6' coop. the problem is that i have been trying to breed them for three years with no success. All of the eggs i but in the incubator are clear when i candle them and they wont sit. I know that i will probably have to let them out if i want them to breed but i have a dog problem and they wouldnt last long. any advice would be appreciated. Thanks