I have 3 roos and 3 hens, all Black Sumatras, that I was given as straight run chicks. They are approaching 16 weeks of age. The hens have not developed any redness in comb or wattle areas, which apparently is a sign of sexual maturity? I also have 11 sexed chicks of different breeds from Ideal Poultry in the brooder that are about 10 days old. A few questions I have: 1) When will the roos begin to try mating, are there any signs that indicate they are getting ready or do they just one day start mounting hens? 2) Will they attempt to mount hens that are not sexually mature, or do they know this and wait? 3) If I rehome 2 roos and keep the top Roo, will a roo be too much for 3 hens? 4) If I do keep 1 roo, and I let the new pullets outside with the flock at 4-5 weeks (depending on weather), will the roo try mating with the youngsters, or will he know to leave them alone? Thanks!