Thank you! Yay! (Only have 4 so I wanted girls).That's all girl, all the way. At 17 weeks a cockerel would have a huge comb, thick legs, and you'd have all the fancy tail feathers to boot. Might be a mix of breeds but definitely a girl.
Edited to add: I have a couple offspring that feathered out like that - not sure why either. Could be a function of the possible mixed breed side effect.