I recently rehomed my last rooster, but saved a bunch of fertile eggs to incubate. However, I lost track of time and end story the eggs sat far too long before I tried to incubate them and were no longer viable. Sooo I am going to "borrow back" my rehomed rooster to fertilize my hens. My question is how long will I need to keep them together to get a dozen hens fertilized? Also, these are bantams if that makes any difference. The roo is about a year old and in his prime and the hens were laying plenty of fertile eggs before I rehomed the guy. Thanks!