I was wondering today about how breeders keep track of thir flock for chick production. For instance, If a Rhode Island Red rooster is bred with a Delaware Hen, the chicks would be Gold Sexlinks (at least this is my understanding). But let's say the breeder has four or five roosters of various breeds as well as fourty or so hens of various breeds. How do breeders keep track then? I hope this makes sense.