One of my Old English Bantam hen just layed an egg today!!! [I'm so happy!!!] But She's only 16 weeks and five days old today! And so is the male. My question is, Is it normal for her to start laying that early and will they eggs be fertile. I've seen my Rooster, trying to mate with the two hens I have... but never seen him get the job done. So will they be fertile???