Hey, I need help. Can bantams handle the cold like bigger chickens? My coop is insulated very well. I have a regular light on 14 hours a day for light and a heat lamp on 24hours a day right over my bantams perch for added warmth since they are so much smaller. They just seem cold. They stay perched under the light all the time and I have had 4 get sick-eye infections. Do they need to be indoors for the winter or are they going to be okay? It has been -20 at the coldest parts of the night and up to about 15 during the day. I don't know the temp inside the coop but I would guess it gets into the single digets. Thanks for any ideas.