I am looking for more reasons to kick roosters off the female flock as I am aiming for eggs only from my white leghorn hens. We've discussed egg-production in a previous thread and the majority agreed that the presence of a rooster doesn't boost egg-laying and some said it rather lessens it especially with very aggressive roosters. Now I am looking for more evidence before I give my rooster a divorce certificate. Do fertile eggs spoil sooner than infertile eggs? If they do, then marriage is dissolved.