the early developed roo is a black jersey giant. i also have buff orps and delawares that are the same age as the roo. I haven't seen him mount his sister, but he's been on the buff and delys. then I have buckeyes are about 6 or so weeks behind those. then japanese bantams and a rir bantam in the age range of the buckeyes. silkies. range broilers. and 50+ meat birds on the way! it's going to be an interesting fall as the first batch should be coming in to their laying cycle, there will be some meat bird rotations AND maybe some fertile eggs to give the silkies!!