Two years ago when we built our coop, we built it close to the house. The first 1 1/2 years we kept the chickens in their run, but last November we started letting them free range. Now that we have decided to fix up the backyard this summer and put a fence around it to keep them out, I want to build a second coop down in the field behind the backyard, about 100 yards from the original coop, that will only be used during the Spring, Summer and Fall. Then, we'll bring them back up for the Winter. How do I go about getting the girls to "move" from their Winter coop to their Summer coop? I'm afraid if I just lock up the winter coop, they'll freak out the first night. How do I ease them into the new coop. Suggestions?