Hi I live in the city and am fenced in in my backyard. I have one hen who is a little older who we can trust to let her out to free range in the backyard. She likes to be picked up and handled. I want to let my other birds out in the backyard but they always run from me when I approach them. I'm afraid that if I let them out, they will take off and give me a hard time getting them back in the run. Should I wait until they are older and more mature to let them out? The oldest is a 9 month cinnamon queen, then I have 2 22 week black sexlinks and 3 17 week barred rock (one mix).