Pullet or cockerel??

[Fbkchicks15]

I have three Red Rangers supposedly female. I got them at 5 days old and know they are about 9 weeks old. Ive watched some videos on how to determine if they are male or female and now I'm suspicious if maybe two of them are males. Of the three of them one has tail feathers that are different than the other two and she is timid. The other two, especially one of them is very bossy. I'm going to post some pix and hopefully someone has a better idea than I about sex.
Thanks!!!
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Top pix is one I think is female.

These two I wonder if they are male??

 

[Nike]

In the bottom pic, the one on the left looks like a male but it's hard to tell just by itself.

 

[Daisies]

I'm definitely not an expert but I would agree with you. The combs are a little bigger and brighter. I also noticed dark spots on the neck which could also mean they're male. Again I am not incredibly experienced and someone might disagree with me later on.

 

[MadamPoofyBrow]

Yeah, second and third is a roo (Think it's the same bird, lol) and first is pullet