We have 15 hens and 1 rooster. They're a few months old and have been outside for about two months now. We haven't built a coop yet, they stay in a pen in our garage at night and free range during the day. When it gets close to dark we let them back into the garage and usually have no problems. Every now and then we have to go find one. It's nice being able to see them easily in the pen so we can count them. We also have a 2 year old German Shepherd who free ranges during the day as well. This surely helps keep the predators away. We have 18 acres in the country and can hear coyotes and bears regularly. We're about to build a coop that will be approximately 8x8x4ft tall. I'm a bit worried that it's going to be harder to count the birds once they are living in the coop, and I worry that we might accidentally close it up with a chicken left outside. Does anybody have any advice on how to make sure all the birds go in at night before we close up the coop for the night? Do we really need to worry about it? Thanks!