My edumacated husband is insisting that you cannot keep a roo with hens. He insists that the roo will kill all the hens. He refuses to believe anything I say (such as if you can't keep a roo with hens where exactly do chicks come from?). Please help me out here? Also roughly how many laying hens would one want to have to keep a family of 9 in eggs (without having to buy any). I do a lot of baking including bread daily. To make eggs for breakfast we go through 2 dozen in one meal. I know this sounds like a lot but I have 4 growing boys and 3 girls.