Im very new to having chicks, only had them for 3 weeks now, but they are starting to get big! I cannot have a rooster where I live. How can I tell? I have Wyandottes if that makes a difference. The place we ordered them from only says that there will be 90% hens so we are pretty sure that we have at least one rooster. How can you "make" a hen? How can they tell at 1 day old that they might be hens? Im sorry im such a newb!!