My 3 week old hen's are almost completely feathered except for a bit of fluff on the necks etc. I posted a question about them earlier and the advice given was to put them in the coop as my 65L brooder (temporary) box was to small. The breeder told me to keep them inside till 6 wks. England never really gets near the warm temps other countries get. I was thinking if i put my coop up and set up a heat lamp inside the hen house part. would this be ok to put my chicks out in that then. I Have one chick though smaller than the other two and she has less feathers. So I'm not sure what's best to do now. .