I've read that the chicks should stay inside in the brooder until all of their feathers come out... about 6 -8 weeks (as a general rule, more or less). This is my first batch of chicks. My 5 barred rocks are going on 4 weeks old. The outside coop is ready and the run also ready... in fact I've been putting them out in their run all during the day for the past week.... and then bring them back inside in the late afternoon. The temps around here have been in the 70s - 80s during the day.... and maybe 50s to 60s in the evening. My question is.... if there were a light bulb in the coop, same as inside their brooder (so the temps were the same, more or less).... is there reason that they couldn't go out to the coop for good. Anyone ever put their chicks outside in the coop before they get all their feathers? Thanks for the help. Pict of the girls in their outside run attached.