I have a flock of 26 twelve-week-old chickens. I kind of jumped into my whole chicken adventure not realizing how much time everything was going to take. I ordered my chicks before I had a coop, then they outgrew the brooder before I could finish it. Then It took me a few more weeks after I moved them into the coop (8'x12') to finish the run (40'x16'). Now everything is finished. Finally. It only took 12 weeks, which I did not expect. Anyway, now that the run is done I've been trying to encourage the chickens to go outside. I picked them all up one by one and put them out through their door onto the ramp. Then I put the back on the ramp and showed them how to go back inside. I've gone out every morning and opened up the coop and they refuse to go outside. I even moved their food outside to encourage them to use the run as well as put out some treats (corn, greens, oatmeal), but they seem to be willing to go hungry and stay inside. Is this because its cold out and they're used to being inside? Is there something I can do to, I don't know, train them to use their run? I resorted to moving their water out of the coop today too and shutting them out of the coop for a few hours to let them get used to the new space. Any help would be appreciated. Thank you.