Help sexing these 3 month olds?

[Tcthomps1]

I purchased this group at an auction 8 weeks ago. They looked to be about 3 to 4 weeks then so that puts them at 3 months now. They were labeled as Australorp, Barred Rock, Sexlink, Rhode Island Red, Brown Leghorn, and Production Red. I assumed when I bought them that they would be mixed gender because they were not identified as one our the other. I can't keep them all (Was planning on culling out the roosters.) But now I am having a hard time figuring out who are the girls and who are the guys! Ann's uff they are all girls deciding who to keep as layers? (I will pay pictures as comments.)

 

[Tcthomps1]

 

[Saaniya]

Looks like pullet

 

[Tcthomps1]

 

[Saaniya]

I think pullets

 

[Tcthomps1]

 

[Flamens Farm]

I think they are pullets too!

 

[Tcthomps1]

 

[KikiLeigh02]

First picture is a pullet. Second picture I can pick out 5 for sure cockerels. Three red ones and two black ones. The ones with the larger, bright red combs & wattles are your cockerels.

 

[KikiLeigh02]

In the fourth picture the black one in the bottom right hand corner is a for sure cockerel.