Let’s start at the beginning with chicks in the brooder. Chicks don’t just peck each other for lack of something to do. There is an underlying problem causing them stress and/or aggravation. As with any living creature, the first and foremost necessity for well-being is comfort.
If a brooder lamp is necessary for warmth it shouldn’t be a blast of blinding light. You may want to make the switch from heat lamps altogether and switch to radiant heat from a radiant heat plate. This will solve your fluctuating temperature problem, and providing you have a good number of chicks, it will be sufficient in keeping them warm.
Note: If it’s brutal cold… you can supplement with a low-wattage red heat lamp. Low-wattage heat bulbs are sold for reptiles, I usually use a 50 or 100-watt, depending on how cold it is.
I’m convinced that happy and content chickens start in the brooder. It’s easy to tell if the brooder has comfort zones. You should see some birds huddled together under the heat source, some resting alone, some scratching in the litter, and some eating. Watch your chicks, their behavior says it all!
TBN Ranch Chicken Keeping Resources 