OH NO!!! I've seen that glow coming from the Silkie coop. Every one of my Silkie's are mixes; 2 are Sizzles, 1 doesn't lay eggs or crow, 1 looks and walks like a duck and 1 looks a lot like a loofah sponge. The 3 little ones are up in the air. Can't come up with a good reason why I even have them unless it's because every time I step in their run most of them squat. Makes me feel a little superior.I did have silkies once and I think they make their own heat. I swear I saw an eerie green glow coming from the coop. Gave me the willies good and proper.