Sexing? Black Star

[Quimby House]

Can any one help? So my chicks should be ALL hens. My son thinks this black star because of its comb and neck is a male. This would be bad as my surprise chick is a Roo. Which I am ok with. But two would be bad. I paid for sexing and used McMurrays hatchery.

 

[3KillerBs]

Black Stars are sexlinked. The males are barred.