I would suggest closing off the run and turning it into a coop, and adding a bigger run. I don’t know how much snow you get there, but my chickens hate snow. In all the years I’ve raised chickens, I have yet to have any that want to go outside in it, so my chickens will spend three - or sometimes more -months of the year, cooped up. They need room to move around.The suggested sf mentioned is actually the minimum suggested space. Overcrowding causes a whole different set of problems.I'm new so tell me what you would suggest with what we have.
Your chickens are still babies. That’s why they huddle at night. What kind are they?