Hello from southern maryland!! We have tons of very clever predators where I am. If you choose to free range, dont let them out on very cloudy or rainy days as i have had foxes that come out and attack on these days. When building or buying a coop the worst predators to worry about getting in are racoons, and secondly opossums. Racoons will pull chickens through chicken wire if they can reach, so make sure when they roost they are far from windows and not sleeping in the run. They can also find any flaw in your coop, such as loose staples holding a section of chicken wire down and their very coordinated hands will blow your mind. They can squeeze through tiny holes. I personally like to free range, but my coop is big enough that if i feel the weather is not good or i wont be back before nightfall to lock them up i can leave them inside. I have also had hawks attack but that is a more rare occurrence and difficult to control unless you dont free range. Good luck! Raising chickens can be very rewarding.