Olive Egger Chicks- 6 weeks

[Mystery-chicken]

Hey y’all. I have 6 Olive Egger chicks that will be 6 weeks old tomorrow. 5 of them are pictured (one i am 99% sure is a hen). I had 2 obvious cockerels that I’ve rehomed already, but I’m suspicious that I may have a few more. I cannot keep roosters at all, so hoping I can narrow it down a bit more. This is my first time raising chicks, so if you think one way or another I would really appreciate an explanation so I can learn as well! I split the pictures up by chicken

 

[JedJackson]

I hate to give bad news, but all of those look like cockerels to me. At 6 weeks, females should not have much growth or color to their combs. If I was you I would ask for a refund from wherever you bought them from.