I've always thought you had to brumate all colubrids or there would be fertility issues. That's what most people say, however, I had read that it is not necessary to brumate corns. I quit brumating my corns 2 years ago, and found fertility just as good as it ever was. I have a pair of Pueblans that I want to breed next year, and from everything I've read they must be brumated. I wonder if anyone has had success with breeding other colubrids, like Pueblans, or King snakes without brumating them?