We have 3 week old chicks. I just moved them to a outside brooder box we built inside of the coop. Everyone is doing great. A friend of a friends house burnt to the gound. They had 29 chicks in their basement brooder and were able to save them but could no longer care for them. They are 3 weeks as well. We took in 10 of them. All seem healthy and happy but just scared. I am keeping them inside to watch them. Question is, when they are ready can I add them to the brooder outside with our current chicks? Or do I need to seperate them until they get use to each other? Thanks for the help!!