HI, I have a flock of thirteen week old dual purpose birds. I want to keep one roo for producing the next generation in a year or so. How do I pick just one?? I have twenty six, straight run, so roughly half are going to be roos. I will be processing the extras in late winter, but I don't know how to decide which one I should keep. They don't free range, so protectiveness is not a high priority, and I want one who's gentle with the ladies, especially as some of them are fairly small (at present, anyway). I particularly want one that's fertile, as that's really what I want him for. I can just see if I took him to my vet that checks sperm quality on my male dogs!! Hee, hee. Might be worth it, just for the giggle factor! I know since these are dual purpose birds I'll want one that's got decent size and a reasonable amount of meat on his bones, but at what age are they mature enough to tell this? Can anyone give me some of the criteria you use to pick a roo? Thanks!