I am new to chickens. They appear to feathered out pretty good. The temps this week at night are supposed to be around 40 -50. Should they be ok without a heat lamp? I moved them out to the bigger pen today. It is covered with tarps on 3 sides and top. They have a large pet carrier with hay inside. Will they be ok? Sunday temps supposed to get a little colder in the 30's. Will they be ok without a light? Should I put a smaller pet carrier in there so it will hold in there body heat more? Thanks for information offered !!