That's what I was going by also! The head spot sent me through a loop, though! Her legs are so dark, I thought it would be verrrrry unlikely to find out she's actually a cockerel. Thank you for that jolt of validation. I appreciate it!
GREAT information!! So am I to assume that sexing them via primary feather growth cannot be done as in other breeds? All my BOs have two different length wing feathers. I feel confident that at least 3 out of those 4 are female. My Barred Rock on the other hand...it's not so easy to see two...