I bought 6 baby chicks from a feed store around the 3rd week in May. The lady didn't know what sex they were or what breed. She said she bought already fertilized eggs and wasn't sure of the breed, but knew they were mixed breed. They are also different ages, so size isn't helping me figure out their sex. They are now around 3 months old, give or take a week or two. I sit out there everyday observing them to see if I can figure it out by comparing their saddle feather tips, combs, wattles, behavior, spurs or no spurs. I still can't figure it out. Are they still too young to tell? When do their spurs grow if they are roosters? At what age will I know for sure? Please help me with some more advise if you can. I can even upload some pictures if needed.