I have about 70 adult guineas in a coop with a large pen that has roosts...I call them the guineas' jungle gyms. The jungle gyms keep them up off the wet ground when it rains or snows. My stay in through the winter I start turning them out in the early spring until late fall.They free range during the day, but I make them coop up every night, because I live very far from any where and there are lots of coons, coyotes, etc. These are all guineas that I raised from the egg. I never turn the new ones out until the next season, for they need time to grow and to learn about cooping up. How I accomplish the cooping up , which is vary time consuming at first and must be done everyday to train the bird. I have a net to catch them with, but I just tap the net on the wood of their pen and kind of push the young ones into the coop. As they grow , they learn to coop up to the sound of the tapping. You must stay with this even thought the winter.By spring , when you turn them out for the day, they will coop back up to the tapping sound......it is great fun to watch 70 guineas come a runnin'. If you ever let them start roasting in the trees, you will fight a losing battle to get them to coop up ever again. I do not want mine to roost out, because the coons pick them off. I have 20 in a coop with no pen and they go in every nite... I turn these out some through the winter, cause they are easy to coop back up.The guineas will NOT go into the wrong coop and there is no changing their coop, so the babies have to be added to the different coops through out the summer. If you accidentally put one in the wrong coop, it will not stay or will not go into the coop, but stay in the pen, flying at the side to get out...Guineas are really very smart...much smarter than chicken... I have another coop with a pen with jungle gyms which is my nursery. I have about 20 adults in there to keep watch and not let a bullsnake get to the babies. The babies I hatch inside in an incubator and at 1 week, they go outside to the nursery into a horse tank with a 1 or 2 100 watt lights on them ...just depending on outside temp and the number of keets. I have hatched 40 so far this spring The horse tank is covered with screen with a sheet over that to keep adult birds from pooping on the babies.... two of my hens just stay in the coop and watch the babies...they could go out into the pen, but chose not to. When the keets start to fly out as i lift the screen, they are big enough to take off the screen and be in the tank or out in the coop...their choice...My birds are all under a year old, so the hatch rate has not been as good as it will be by the end of the summer. Some hens are not even laying yet. i have 5 hens setting on a community nest in one of the coops and those should start to hatch soon. If I can caught them I will put them in the nursery, cause this is one of the coops I turn out everyday. I hope you enjoy raising guineas as much as I do...GOOD LUCK...