Not sure of the gender or breed

[1stxchickmama]

We got our chicks at 2 days old from my son's kindergarten class so we aren't sure of the gender or breed. Although we had an FFA lady who sexed them for us when we took them home.
I'm concerned because we have 2 in question of hen or roo. They are just over 2 months (9 weeks) old. If they are roos then we will have to give them up.
Our concerns are:
1. The black one (Black Betty) sounds like a goose and then does this half crow, but usually only in the AM. I'm hoping she is just trying to find her voice. Once we check on them she immediately stops. She is also much larger than the others.
2. The white one (Speckles) is starting to imitate Black Betty's crow but it's really high pitched! She does not stop when she sees us.
Is it normal for all chickens - roo or hen - to go through a "loud" stage?

Any advice would be much appreciated!

 

[sourland]

The pictures are not really well defined, but that's a lot of comb on all chicks for 9 weeks old. I believe that all are cockerels.

 

[1stxchickmama]

Thanks for the reply. I need to get pictures of them outside their coop but when I open the door they all want to sit on me at once! I really can't get a great picture that way. I will try to get a more defined picture. I really hope they aren't all cockerels!

 

[donrae]

Any bird with a red comb at this age is male, sorry. Every bird I can see is a cockerel.