I have heard of a few ways to sex day-old chicks that aren't sexlinks, but people say they aren't very accurate. I know of holding the chick by the scruff of its neck and watching to see if it tries to scratch the hand that's holding it and I know the feather-test. The one where you check their wing-tips. Is there any perfect way to determine their sex? In the incubator I have Delawares, Leghorns, RIR's, BO's, and BR's.