If I can just throw something out there. If you usually put them in at night, you are likely going to get another lesson, this time probably from raccoons, that until you button them up tight at dark, each and every night this won't be your last occurrence of this type. I'm sure I'm not alone here, but has been many a time we have left things early, or run home at half time of school events to close coops. Hope this doesn't come off as preachy, just giving you a heads up.
I totally agree with this, we never open the coop yard until the sun is up over the horizon, and we always have them locked up as soon, or before, the sun goes down. If we can't do it ourselves, we have a neighbor do it. They never mind because the chickens put themselves to bed by the time the sun goes below the horizon so all that has to be done is a head count and locking up the coop yard doors. And yes, we learned the hard way. Coyotes taught us never to leave the coop yard open at night.