Last year I was gifted 3 red dorking hens and a roo. I sat eggs over about a six week period and everyone of them were clear. I then noticed that the rooster never mounted the hens so this fall I acquired a different red dorking roo. He is supposed to be a year old and I have seen him mount the hens regularly. I am on week three of eggs and all eggs are clear. I have multiple of breeds of chicken in one large pen that is subdivided by breed. All other breeds have great fertility. Any suggestions?