Unless you want to be looking around everywhere for your eggs, including nest boxes in your plans for chicken coops is an excellent idea. You’ll find some designs – like small portable chicken tractors – often have them already built in, but others leave the choice up to you, or give various options. Following these tips should help you decide which are best for you.
What you want is a sheltered area that your chicken are comfortable to lay in. By sheltered that means even inside a chicken coop it should be a separate boxed off area, shaded if possible to make it darker and again, if possible, away from roosting perches – you don’t actually want the hens to sleep in there because they’ll likely make a mess. 12 inches square is a good size – so your birds can actually stand up if they want to. Bigger is better if you’ve got the space.