Gender?

[AubriD]

The black and white one have very noticeable combs.

The last photo is from when I first got them.

I have had these chicks for about 3 weeks. I believe they are about a month old. I am pretty positive the white and black one are both Roos. I am not sure about the rest and I think that they are Dark Brahmas. Please help if possible.

 

[oldhenlikesdogs]

They are a bit young yet, those that develop a pink comb before 8 are generally roosters.

 

[Hybridchucks]

The ones with bigger combs are male.....

 

[21hens-incharge]

To young yet.

Different breeds have different combs.
When they are 8 to 10 weeks old it will be easier.
I would suggest waiting a while then posting pics of individual birds.
Natural standing pics from the side work well and a pic of the comb as well.
Listing ages and any that you know the breeds of is valuable information for the helpful folks on here.