i traditionally look at a wing to sex a day oled chick.(the method of splaying the wing and checking the rows of feathers. one tall row with a short row in between is a female and twotall rows is a male.) but i recently came upon a new method. when you lift your chick up by the head, if the legs stick straight down, it is a male. if the chick curls its legs up, its a female. its worked for me. try it!