I have five 1year old free range SS and almost 6weeks old caged-in SS chicks. Because so hot outside and little chicks fenced in area didn't have good shade, I thought I want to let them go to free range. Older ones are seeing little ones thru the fence since they were 2weeks old. Do you think they've seen little ones long enough to be not bothered???? Also, when they go in to same coop, how do you managed to feed them separate?? My little ones are still on chick starter and big ones are on layers. Do I have to put wall in the coop or something???