Hi there. I'm new to this but roughly 3 months ago I bought 7 mixed breed 5-7 week old chicks from a lady who told me they were pullets. Now I have had my doubts about them being pullets for a while as they just all look a bit manly if that makes sense but still I held hope. 6 days ago my Plymouth looking fellow started crowing and my heart sunk. Although the others are not crowing yet they often have a stand off with each other. My favourite (rose) is the dark chestnut chicken, lovely temperament they are all very friendly. I'm just not sure and I'm wondering if some of you wonderful chicken people can help me. Thank you in advance 

I was hoping I would have at least 1 pullet. Booooo. I forgot to mention they're roughly 20-23 weeks old
I have 2 rooster my near home people are saint nevr complained but my roosters are too too too dominated at crowing
yes he is the one who has started crowing. The white one was a runt he is the smallest. The last one is only small too to must bantam maybe. Sorry still learning
Does anyone have any pointers or should I just wait until they doodle-Doo or lay an egg