What sex and breed please?

[Mrs Clutterbuck]

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I got these gorgeous chicks last week. Unknown "large" possibly "mixed" breed- free ranged flock. They are 4 weeks old, I'd love your input.



I tried to pick girls, decision based on size in relation to other chicks, their small combs etc. It sure is tricky to get a good photo! Thanks for your time

 

[EEBLACKCOPPERMARAN]

EE mix maybe?

 

[Mrs Clutterbuck]

Thanks, I'm not sure though EE aren't common in NZ. I heard back from the egg seller breeds held - Brown shaver, Orpingtons, Light Sussex, Barnevelder.
So some mix of the above. I definately think the little brown one is Barnevelder x but what would give those little black feet?

The blue/grey- I have no idea!!