Around here, Fall drops down to 20 degrees
And it just goes down from there, recently
It seems like my chickens have been cold, huddling up
They live in the shed, and I changed the lighting from a Compact

Flourescent to a Infrared heat lamp. What do you guys think of this?
I heard that if the power breaks, they will die very quickly. I don't know if adding a heat lamp is a good risk to take. What do you suggest?