0% chance of sexing chicks that young.
Unless they're auto sexing or sex links and they're so small in the pic I can't make out hardly anything about them.
They are supposed to be female but. I question because they look like they have two different types of wing feathers. I'm trying to post a closer up picture just of the feathers to see if anybody can tell me if they are different sexes.
On a full bred bird, feather sexing doesn’t really work. You have to wait for them to be old enough to sex in a traditional fashion if they aren’t sexually dimorphic.