Since I've been reading this website I have been wanting to hatch some chicks. I've made a incubator with a styrafoam cooler from the instruction on here and it's ready to go now. My chickens are 8 months old and from what i've learned on here they look fertile. They have the white ring on the yolk. Is it possible to hatch pullet eggs? Or do I need to order eggs from someone that has older birds. Thanks