And I am NERVOUS! It's got more locks than Fort Knox, but I'm still unsure about the heat lamp being enough or too much. Or that some crafty fox has already broken into Fort Knox and our security means nothing to him. sigh. I wish they could just live in my bath tub. What kind of behavior do the birds exhibit if they're too cold? (other than crowding under the light). Mine are sleeping quite close to it, but not right under it. They are a month old.