I have 11 bantam chicks in my brooder with the Ecoglow 50. They are about 2 weeks old now and are feathering out slowly it seems. They only have their wing feathers, and a few of them are getting their first tail feathers. Has anyone had experience with chicks feathering slowly under the Ecoglow? The brooder is in the window and gets sun during the day as well. I worry that they're spending too much time getting warm and not enough time out to stimulate feather growth. Any ideas?