Hens or Roos? I can't wait any longer!

[sourland]

I agree with @JedJackson

 

[Geena]

The two big ones look to be some type of hatchery meat strain.

Yep, they look exactly like some of the gray broiler pullets I got this year. At 12 weeks I would say those are definitely girls. Colored broiler cockerels have big combs and male specific feathering by 3 months old.

 

[JedJackson]

Yep, they look exactly like some of the gray broiler pullets I got this year. At 12 weeks I would say those are definitely girls. Colored broiler cockerels have big combs and male specific feathering by 3 months old.
View attachment 3363278

But not to scare off the original poster, these meat strains are not the same as Cornish cross. They should live longer and be fine in a regular flock.