I have three, 19 week old Columbian Wyandottes and one of them has recently grown a comb and wattles while the other two have nothing. I'm having trouble finding any information on sexing CW's and am hoping that someone here can help me. Does she look like a roo or is she just developing before the others? The first photo shows the three birds together, the last two are just the bird in question. Thanks for any help.