They're just chatting about their day, gossiping about the silly humans who THINK they own them, and telling each other bedtime stories. I also think they're setting the watch - determining whose turn it is to stand guard and who messed up the job last time.
We did that with Scout, sunflour. He was the little roo chick that suffered frostbite on his toes when he was just a couple of weeks old and had to be brought it for treatment. We had him in the house for about 3 weeks, but we took him out regularly for "supervised" visits with the flock and...