From Ideal Poultry's website, care tips for chicks: "Proper temperature at bird level under the brooder or heat lamp for the first week is 90 to 95 degrees. Reduce the temperature 5 degrees each week for the first five weeks. After that time the poultry will normally not require supplementary heat. Remember, baby poultry need to be provided with enough space so that they can move to the heat or away from the heat source according to their needs."