Breed and sex help please

[Flappy90]

Please can I have some help with sexing and working out breeds of my soon to be new members of the family. All from mixed breed eggs.

 

[Pyxis]

How old are they? The third/forth one seems to have some red in the comb and wattles, so that one I would keep an eye on as a possible cockerel, but the rest don't show signs of being males as of now.

As for breed, if they are from a flock of mixed breeds, then they too are mixed breeds

 

[esme13]

I agree with pyxis

 

[Flappy90]

How old are they? The third/forth one seems to have some red in the comb and wattles, so that one I would keep an eye on as a possible cockerel, but the rest don't show signs of being males as of now.

As for breed, if they are from a flock of mixed breeds, then they too are mixed breeds

They are all just four weeks. I was just wondering what the main breed/s that have created them could be.