just reread my first post and realized I didn't put my question in there lol. its been a long day lol.
not sure how you would tell. the blue roo can sire black chicks. both roos look like they are barred so that would not help you either. the silver barred roo I think has only one copy of the barring gene so he would only pass that long to about half the chicks. if the other roo is barred same thing. does the chick have a spot on its head?