Should we separate the hen from the rooster?

[nuthatched]

The employee did the wing feather check. She did say it not an accurate way by she felt pretty confident the ones she choice were pullets. The problem though is at the feed store; on the sign it says the breed and then what they are (Pullets or straight run). But I get that sexing the chicks aren’t 100% but it was very surprising to us to end up getting 5 cockerels out of 6.

Wing sexing doesn't work on 90% of chicks, and even then, it has to be in the first day after they're hatched. Bum luck.