I've not had guineas before but we have five of them now. They're about nine weeks old and we've been keeping them in an enclosed run where we had our chickens before. Our hens would always come back to the run at night to roost even though they'd been out free-ranging for hours. Normally we'd let the hens out about an hour or so before dark but sometimes on the weekends they'd be out pretty much all afternoon once they'd layed. My question is this: Will the guineas do the same? Come in at night, that is? We live way out in the country on about five cleared acres ringed by woods. I suspect they will go off into the woods if we do let them out. The hens pretty much stayed in sight of the run and hardly ever went into the woods. And a second question, how long should we keep them in the run before we start letting them free-range? We're getting another 24 black sex link started pullets in September so we'll be back in the egg business before long.