Hi all, We are new at Chickens. Our chickens are 6 weeks old and we still have them inside. When are they ready for the outside coop? We live in the Philadelphia area and currently our weather is ranging from 45 degrees to 70 degrees (yes it can be that drastic) depending on the day. They have grown so big! We are very attached and actually dreading putting them outside. We have made a predator proof coop with an attached run. So....how old should they be to go outside? Thank you!