I just looked back & it was actually on this thread a page or 2 back...lol
Oh, no wonder I saw it! Lol
I just tried checking one and it opened up pretty easily, so I tried the rest. I think, think.. I have 2 boys, 2 girls. They were pretty calm for it, which surprised me. Might try again tomorrow to verify.
If you see the genitals protrude you can be certain it is mail. If nothing sticks out, you either have a female or a shy male...lol