Some great advice above. I'll emphasize that you need an area warm enough in the coolest conditions and cool enough in the warmest conditions. To me the temperature swings are the biggest issue in brooding outside of a climate controlled area. Make the brooder big enough so the chicks can go where they are comfortable. That location will change.
Something else you need is a barrier to keep direct breezes from hitting them. Details vary depending in the time of the year and conditions I expect but I use plastic down low to keep breezes from hitting where they are even in good warm weather. In cold weather the entire brooder may be wrapped but I do have some openings up high for ventilation.
Something else you need is a barrier to keep direct breezes from hitting them. Details vary depending in the time of the year and conditions I expect but I use plastic down low to keep breezes from hitting where they are even in good warm weather. In cold weather the entire brooder may be wrapped but I do have some openings up high for ventilation.