I've got 3 cochins. I'd guess they are 2 months old. I also have 4 silkies, maybe 3 weeks old. Do the silkies need a heatlamp when the temperature goes down in the 50s at night? If I sneak into the coop, they are all huddled together. I thought that they were cold, so I've been turning the lamp on at night. Three of my silkies have died ( I had 7 to begin with). Maybe they're too hot. I"m new at this and don't know what to do. I feel like I did as a first time mommy 39 years ago! I'm terrified I'm killing my chickies!