One member here pointed me to a site that said if you sail a hat over the chicks the males will stand up and chirp loudly...the hens will hunker down and get really quiet. I tried it and kept track of all my results. But I just swooshed a towel over them. This is supposed to be normal chicken behavior.
I also did the pendulum thing, which is an old pioneer way to sex chickens and to find out the sex of a baby while the mom is still carrying it. It is also supposed to work on eggs. According to my old bird sexing book, you should use a gold ring on a long hair, preferably a horse hair...I used a gold chain (I don't have horses anymore) and the ring "told me" that the same chicks were males and females, as the hat trick did. If you hold the ring/pendulum, it's supposed to move around in a circle over females and swing straight back and forth over a male. I also tried it on my sex-link chicks (all females) me, my dog (a female) and my DH and it was right every time. I did it to a lot of people at work too and it was never wrong. This method is supposed to be about 90% accurate.
I've heard of the feather sexing too, but never tried it. The one with the wing feather length.
There is another feather sexing method...the hackle and saddle feathers of a roo are pointed and in a pullet are rounded. But they have to be older to do this...they are most likely crowing or have red combs by then anyway.
Then there's one that says chicks with longer legs and toes are roos and shorter legs and toes are pullets. This one is supposed to be 85% accurate.
Hope that helps...I think the best way is just to wait. Time will tell for sure!
I love the term one member here used..."GENDER OBSESSED"...that's me!! I can't wait to find out what I have!!