I have 2-7 month olds and 5 - 3 month olds. Tonight the 3 month olds decided to roost instead of huddling on the floor. There is plenty of actual space for all of them. The five of them were all up on the roost - which is actually a flat shelf. Everything was fine. Then the older girls came in. They jumped on their roost and they all started cackling at each other. Then they started slowly scooching over until one by one they knocked all of the other girls off of the end. The one on the end would plop to the ground and then scooch, scooch, schooch...the next one would plop to the ground. A couple of the younger ones tried to get back up but kept getting knocked down. Finally there were just the two on this whole big space all by themselves...
I guess that I need to add more roosts...