If your yard is fenced, you can let them out. You may have to herd them back inside the first few evenings. Some keep them inside a couple of days first, so they can imprint on it, but that's more for guineas (who need to stay inside a month before you let them out). They're standard breeds, as I recall, not bantams who can fly well, right?
Thanks for the nudge...We let them loose after about an hour in the coop. They seemed to be very happy and at ease. LOL...My son (13) said "Man, this is better than watching TV." You can't buy this kinda entertainment with cash and a co-signer.