I have three questions regarding hens that I would like for experienced chicken owners to help me with; Question #1). I own no rooster. I own no broody hens. If I were to add a rooster to my flock, once the eggs become fertile, would the hen(s) become broody and hatch the fertile egg(s)? Question #2). If my fertilized egg(s) were to hatch, will the hen care for the new-born chick, or, is there something I need to do? Question #3). Some of my hens are being pecked on their back near their tail end. Blue Kote, Vicks Vapo Rub and Peck-Me-Not no longer seem to be effective. If I add pine tar to the recipe, will the pine tar hurt (cause pain) to my birds?