I have 12 guinea keets about 3 to 7 weeks & there are at least 3 cock birds & 7 hen birds. I was watching them today & that is what I could figure out by there calls. Will find out more within a week or so. Just would like to know at what age they start breeding. At what age are the cocks to be able to be fertile to breed & what age do hens start to lay. I'm going to keep a few to breed with & see what happens.