Hi, Our female Herman, who we have had for 40 years, spent last year with another male that a friend of ours has. we have never had eggs before and last friday she just popped one out on the way out of her house. the next day she lay another on the lawn after having a bath. I have incubated them both, but what are the odds of them being fertile with no digging activity? also how long before i can tell if the eggs are fertile or not? thanks in advance