Does anyone know how to tell if you have SQ bird? I'd like to show some Cocks this year but I don't have a clue how to tell if they are SQ most of my cocks are already dubbed so I know they are ok on that part. But can you show mixed line birds? I have a beautiful birchen rooster that is Sid Taylor and law Grey crossed. And I also have some Full Red Quil and Mclean Hatch. What do you guys think?