I wasn't sure where to post this. Is there a way to determine pullet or roo in Japanese Bantam chicks just by looking like you can with some other types of chicks like the roos that are born with spots on their heads. I have six that are different colors that I purchased from Ideal as straight run. There are two different ages. Three weeks and one week. They sent replacements when the majority of the first order died suddenly upon arrival. I'm hoping for at least a two pullets and one roo.