Dark Brahma and White Sex linked gender identification

[Patty12344]

I bought these chicken from Tractor supply 10 weeks ago. The two white were suppose to be females and the two dark were not sex. But now I’m starting to believe that all my chickens may be male. Does anyone know what sex they may be. One of the white ones has even began to crow.

 

[sourland]

TSC strikes again. The two white birds are Cornish X cockerels - meat birds that will not live very long.

 

[MagpieDucks]

The Dark Brahmas are both boys.

And the “white sex links” are Cornish Cross Cockerels.