Absolutely! Let them play!I took mine out at one week of age (under supervision of course lol) and they've done just fine. Just make sure they don't act cold. If they start to huddle close together they're probably chilly. Note though that when you first take them out they may do that just because they're scared. Mine couldn't get close enough to me the first time I took them out lol. They would've crawled in my pocket if I let them!so as long as you pay Attention to their body language you'll be fineyou may want to provide some chick grit in case they need it.