The rust color alone does not mean male, in fact having it on the chest in some breeds is a indicator of female. A comb that size at 7 weeks... Not sure if any leghorn pullets would have that, but the red color and size of the waddles should be enough to prove males. Not sure how Hoovers guarantee,if any, works. Maybe they wait for saddle feathers for all birds????so that is what their customer reps are trained in.
