Help! We purchased chicks today and don't know how old they are. Unfortunately they were bought before we were completely prepared. What is the best way to tell how old our chicks are so I can adjust their temperature appropriately? We have them inside right now in a temperate controlled room in a large tub with bedding, food, and water. It will be staying cold outside for at least the next few weeks. Can we put their brooder outside? How cold is too cold for what age? Meaning the temperature at opposite end of the heat lamp. We plan to have them outside in the coop once they are old enough but my fiancé didn't give me much time to research more to know the ins and outs of ANYTHING (I still love him though!) We are very excited to raise chickens. I know a lot of know how comes from experience but I want to do it right and keep them healthy!