New to chickens, could someone please tell me the sex and bread?

[Ashley Bruce]

I bought these 3 beautiful babies, new to chickens, is someone able to tell me I am wrong in thinking this one is a roo. I am in love with them all already and I'm not wanting to part ways with any.

I noticed the other ones in the pen when we went back had MUCH larger combs at the same age which were Obviously roo's. But this one's comb is pretty flat but has colour.

Can anyone also tell me the breeds as someone had exotics but where we got them from, she was unsure which breeds were which, as they were not from her flock.

Thank you kindly

 

[Ashley Bruce]

She also said they were 8-12 weeks?

 

[Ashley Bruce]

 

[nuthatched]

Mixed breed, pink comb is male