I have five LavOrps, just two weeks old now and there is a noticeable difference in the length of their wing feathers. Three go all the way to the tip of their rump, while the other two are still very "nubby". I vaguely remember reading somewhere that this could be an indication of gender? Of course, I can't remember which indicates which...does any one know if this is true? And if so, do I have three hens and two roosters, or the other way around? Thanks.