I'm writing because I'm so impressed with the knowledge shared in this forum. My husband and I have 4 Golden Star chickens (all 4 started laying in the past 2 weeks ) and we're new to all of this. Living in MN, we expect some pretty cold days and nights in the upcoming months. We're looking at lighting and having a hard time deciding what is best to keep the girls warm but not hot. We will be using the deep litter method this fall/winter as well. We have an 4x6 A-frame coop. Being an "A", there is plenty of floor space but diminishing vertical space (2.5-3' inside). I suggested we purchase the under the cupboard style light so that the chickens have more space. The issue is they come in fluorescent, halogen, and xenon. Any experience or knowledge about these? Based on our experience halogen get warm but will they be too warm? We just added a 60W bulb in a caged automotive trouble light--to help with egg production. Will this provide enough warmth? What other suggestions or experiences do you have that we can learn from? We use this site and the Raising Backyard Chicken for Dummies book but it seems that most coops are much larger than ours and I'm one of those who likes all the answers before I have to learn the hard way (and at the expense of our new family members). thank you!