We live in Arkansas and the weather have been about 80°-90° during the day and depending on overcast and all about 40°-60° at night. My chick are about two months old and almost but not quite fully feathered. Still need to work on the head and neck areas. Is it safe for them to be out day and night without them freezing? I'm new to the fluffy baby part and having a hard time letting go. They enjoy the field trips and get pretty mad when I bring them back in :/