I have thought about having chickens for a couple of years. Thursday I bought 29 two week old chickens. I don't know what kind they are but there seems to be three or four different breeds. I am keeping them in a large dog pen with a heating lamp. They seem to be doing great and I am reading everything and learning as I go. I have three questions. 1. How do I tell the hens from the roosters? 2. When should I separate them? 3. How long will it take for them to quit being so afraid of me?