Help sexing my 7 week old chicks

[imnicole]

I think the first is a rooster but want to confirm and check on the other ones.

 

[Free Feather]

How old are they? The bottom front one sort of looks like a cockerel.

 

[imnicole]

7 weeks

 

[imnicole]

7 weeks

 

[Free Feather]

Sorry, not sure how I missed the age.
The back and front look like males, but I could be wrong.

 

[silkiechickens8]

The one in the first picture looks like a cockerel to me, but I'm not 100% sure.....