This is an old thread, so I'm not sure to which post you are referring. But I can say that quite often, frostbite is caused by inadequate ventilation, resulting in too much humidity in the coop. Chickens have gotten frostbite in temperatures as warm as the 20s and 30s because of that. Also...
A simple 40 watt bulb would be just as effective in giving them that "kickstart". Although, if you have pullets, I don't know if it's going to make a difference or not. That may all depend on hormones and when they're ready to lay. A first-year pullet will generally lay through the winter...
I think the difference here is, your temperatures fluctuate from day to day. They're not moving from one extreme to the other on a daily basis. Your temps are obviously not sustained for any length of time for them to acclimate one way or another .
"They would appreciate it" until they become dependent on it and when the power goes out don't have it, and they're not acclimated to the cooler weather. Chickens, cats, dogs, horses, and any other animal you care to name are not like humans. They have built-in coats of various types. Chickens...
Honestly, they don't need vaseline on their combs either. Not in 32* weather. Not if your coop is dry (as in not humid) and well-ventilated. I have never, ever put vaseline on my birds' combs. We've only had a few cases of frostbite when we had temps in the double-digits below zero for an...
I think any bulb will be too much. Your chickens will be fine without supplemental heat if they have shelter from the elements. I live in MN and do not heat or insulate my coops. The closest thing they have to heat is their heated water bowl. Read this...
X2!
Frost on the walls could indicate too much humidity. I'm in MN, and it's supposed to be in the double-digits below zero tomorrow night. No heater in my coop. You are actually doing your chickens a disservice by heating the coop. By using supplemental heat, they don't get acclimated to the...