An update from last week:
The 2 mamma’s en 3 chicks are doing great. But the space was getting limited.
Before moving them to the second run with the large nestbox in it I wanted to try if it was possible to integrate the flock by opening the divider between the old coop and the extension. I figured out how to let the flock free range by closing the coop and main run. And keeping the second run open if the flock chickens want to eat, drink or lay an egg.
The first attempt was good. The two broodies are very protective and the chicks are safe. The broodies get real bullies if another hen comes too close.
There was one problem. When the momma’s went through to pop door to the run the chicks tried to follow. But these bantam RIR chicks could not jump very wel and just one chick could follow.
When the momma’s went back to the chicks that stayed behind. The first one couldn’t figure out how to get back. It tried to find a way through the HWC.
They chicks obviously where too young to open up their coop.
So for a few days I made a little fence around the coop door and let them range in this small run with supervision about an hour each day. Chick TV.
searching for food in the dirt under supervision
A few days ago, I tried opening up again. The chicks had grown bigger and stronger. And yes, they all went after the 2 mamma’s into the run. They where so happy with all the space and dirt to dig in.
I checked regularly if there was no problem. They all could find their way back inside when it was time for a nap

.
So, I left it open. Checking quit often if everything is going okay. Only once I rescued a tired chick who couldn’t find its way back to the others at the end of the day.
First day I put up a fence in the run to be sure the chicks could get in and out the coop through the pop door.
I also figured out how to let the flock free range and keep the chicks safe for the cat who knows her way into the coop. I can close the opening between the first and second coop. But if I do so the flock has no access to their roosts and the laying spot they prefer. So I let them free range just for a short time or at the end of the day.
The neighbour cat that likes to come into the run.
The chicks and mamma’s taking a nap in the run.
The flock chickens, free ranging