How do you guys keep a record of your breedings/hatches/individual birds? I've been doing a color coded band system with zip ties (I cut the tails short so they don't get pulled tight). One band is for the year they were hatched and I have another for "breeding group" or "do not breed". I sometimes add a third band for secondary traits I want (broodiness being one). I like this for sight Identification since I've gone well above 50 birds, it is hard to keep track of individuals. Does anyone use numbered bands? What systems of record keeping do you use?