Hello everyone - I am certainly new to this, we decided to raise a few chickens for egg layers. Easter weekend, we got 3 black and 3 red babies. They are now 5 weeks old and starting to feather nicely. I am not sure when I can actually put them out in their pen & coop, we live in Michigan and they have been living in a spare bath tub. I am afraid the nights are still a little cold for them. If anyone can help me with this I would greatly appreciate it.