Hello: I'm sure there has been many a post about this and if there is a link you can send me to that would be just fine! I have 6 3-week old chicks that I am not even sure the breed of since they were hatched from fertile eggs I put under my broody. 2 look like reddish golden rumpless Arucana's One looks the same but has a tail. 3 others are black of which 2 have a white spot on the head which I read in a chicken rearing book is the sure sign of a roo that is a Barred Rock/New Hampshire mix. The other is all black with a yellow spot underneath. I am giving three away to people who don't care if they are roo's, but I for sure want 3 hens for myself. Thus, would like to know the sex. Thanks.