Hi! I am new to the chicken life. We have 1 rooster who is about 6 months old (Partridge Silkie) . His hen passed away about 1-2 months ago from a chest infection that we could not get rid of. He has been alone and we recently got a mix of chicks, some are 4-5 weeks old and other 1-2 weeks old. The chicks are currently inside the house in a brooder. At what age can they be introduced to the our rooster? I feel like he is lonely but want to keep the chicks safe. We live in central FL but it's too chilly at the moment to have chicks outside.