Today I put the leather strap on one guinea's leg and tied it to the outside of the coop. It did not like that. I am wondering if there is an easier way to tell a male from a female at almost 7 weeks old? Easier than their voices? I am hoping that if I tie out a female the others won't go far. I have 9 and I know that if I let them roam, I won't ever be able to catch them all and get them in the coop at night. If I have one tethered to the doorway of the coop, it will likely go in at dark and maybe the others will follow it. Does this sound reasonable for guineas?