Lol...I had to laugh to myself when I read what you wrote because I couldn't tell the females from the males in my first chicks until the females started squatting. I look back now and it's so apparent to me which chicks are male and which chicks are female...I almost want to slap myself. I'm still learning about the other types of oegb chicks from what everyone's saying, I don't have an eye for them because I haven't raised those types.
But I agree with you and WVduckchick...once you've raised the SDW and Crele and can see the differences...it's much easier.
Off topic from the oegbs...what are you using on the Legbars for olive? Are you using Marans?
My first OEGB hatch was all SDW's, but I had a light burn out their first weekend, and only 3 survived (2 males, of course! lol). I couldn't find more SDWs at the time, and a friend had some mixed-color OEGB hens, so I got them from her. And another friend gave me 2 SDW hens. So my next several hatches were my SDW male over all the girls. The chicks all looked different! Once I got enough SDW's, I stopped hatching the mixed ones. That's when it became easy for me to tell the difference.
I bet you had a lot of cute, fluffy surprise chicks!
I'm amazed at all the colors oegbs come in. I have my limited experience with the Creles and SDWs but I know absolutely nothing about the rest...lol.