6 New chicks' possible breeds?

[ChickenTenderz]

Here they are doing their thing

 

[C Siena]

I've seen the black one with the fluffy feathers on his head try to mount our hens and the two black ones challenge each other. Where the other two don't do that and are more timid.

I have not seen our cockerels try to mount but I have seen pullets chest bump many times in all of our 6 clutches.

We'll learn from others post.