Hope this is the right spot for this question! I have several lovely roos in a pen with my hens. Ok, so I've read online that once a roo covers a hen, usually the second or third egg the hens lays after that, is fertile by that rooster. Furthermore, I have read online that the hen's eggs can remain fertile by that one rooster, from just that one encounter, for up to two weeks. So here's my question - I've seen the same hens be covered by BOTH roosters. I've seen Roo #1 jump on a hen, then the next day, it's Roo #2. I know that dogs and cats can mate with multiple partners and can have babies from different dads within the same litter. Are chickens the same way? Or are all her eggs fertile by the first rooster she encounters? Does the DNA from Rooster #1 have to pass through her system entirely before she ever uses the DNA from Roo #2? Or is it all stored inside and mixed up in there at random? (In which case, a week's worth of eggs could be sired by either rooster.) Totally curious! Anyone know the answer?