Hey! I'm a first time chicken owner! I have 7 Leghorns that are 3.5 weeks old. I have been putting them out in their coop during the day and then bringing them back inside to their brooder at night. The temps here are around 80ish during the day and drop to around 55-60ish at night. When can I leave them in their coop all day and night? They love being outside!! I hate having to bring them in at night but I'm worried they will be too cold?? Any tips would be greatly appreciated!!