Hi, I am a new chicken owner and I have four girls that I got at 2 days old. I may be the first chicken owner in this area. The girls, Blanche, Sophia, Rose and Dorothy are all different breeds and love being outside in their coop. They are almost 6 weeks old and used to my two heeler dogs. Their run just got finished but I worry about racoons,owls, hawks and my entire yard surrounded by oleanders. How much range time do the need? Will they peck the leaves? Thanks for any help!