OK - so I have some chicks, now 6 weeks old. They are a mix of: rhode island red Plymouth rock Light sussex I have no idea what percentages - although I can find out. I got the eggs from friends not far away, so Im sure she will come and help me sort them out. Its just Id like to know more myself. The question is - how do I tell which sex they are? They are a mix of colours from white - grey - black - brown. at present their behaviour is giving me no hints. A couple of weeks ago I saw more of what I think of as "play fighting", but either that has stopped or they only do it when Im not there! Hope someone can tell me what to look for.