Brahma chick genders?

[Brahzaar]

So its my first time rearing chicks and I know it's probably a bit early, but hoping someone more experienced can give me an idea, thank you. They are all Brahma around 6 weeks. I can of course take more photos if it helps.

Note: #4 has a bit of wound care applied after cutting his/her comb.

Thank you in advance for any responses.

 

[Ecarroll]

A picture of each bird would be helpful!

 

[The Moonshiner]

I'd say 2 and 4 are surely cockerels.
Others are too young to be sure

 

[Brahzaar]

A picture of each bird would be helpful!

Sorry, here's an individual photo of each one

 

[Ecarroll]

Sorry, here's an individual photo of each one

Thank you! I agree with @The Moonshiner, a little to young to tell but 2 and 4 possibly cockerels.

 

[Brahzaar]

Thank you both for the responses, I appreciate it.