Help identify breeds/sex?

[Dream Gold Farm]

These three were given to me. They are a month old. Any help is greatly appreciated as I am a total novice.

 

[Brahma Chicken5000]

L-R: Cuckoo Marans pullet, a cockerel, & a White Leghorn pullet. They look closer to 3 months of age.

 

[crazy4ChickensNducks]

Barred rock pullet, need better picture most likely a mix-cockerel, white leghorn pullet

 

[Dream Gold Farm]

L-R: Cuckoo Marans pullet, a cockerel, & a White Leghorn pullet. They look closer to 3 months of age.

Thanks! I thought they might have been a bit older but I only had the limited information from the young lady who gave them to me.

 

[Norcal527]

The middle one looks like an Easter Egger cockerel