They don't need artificial heat in order to survive, with the possible exception of it being very cold, or if there is only one or two chicks. We've had chicks go without heat many times when it was only 40 degrees at night, and never had one die from the cold. Ever. As long as they have something to cuddle up with and under, they're fine. A bird's body heat is a lot hotter than humans, and freathers or not, they keep each other warm.
5/29/15 at 7:31am