Ok, the other day my wife comes home from work and tells me this woman she works with who has raised chickens for years always has known if her babies are male or female. Very simple to tell and she's never been wrong. According to this woman you very gently pick them up by their necks and if their legs remain down straight you have a rooster. If the chick pulls their legs up tight against their bellies, pullet! Hum, i don't know if this works because i really don't want to hold my chickens by the neck anyway! Wont that hurt them?