I have 7 six month old embdens. When they were goslings a couple of them had weak sex linking so the best I could say was "they might be ganders, maybe?" I've tried vent sexing them but so far that hasnt gone well. Ive been trying to go by behavior instead. Theres one that I can definitely say is a gander because hes mean like a junk yard dog. But hes the only one that stands out. Im guessing this is because they arent matured yet, can I expect that to change enough to be able to tell?