oh oh i think i know how u can tell. well according to my uncle you can tell whether it will be a rooster or a hen by picking up the chick by the "butt" not its tail feathers but the lil butt.lol. just pick it up a few inches of the floor then just drop the chick ( well not chick but the hmmm adolescent chicken, like yours!) dont pick it up to high just high enough that the entire bird is off the ground and that when u drop it u dont "DROP" it.lol. and watch the tail of the chicken and if it waddles or shakes then its a male and if it does nothing at all then its a female. yup.yup. my uncle did it to my lil chickens not to long ago but the ones that did shake their tale are looking like roosters as they gett bigger. hope this helped!