A dark strip on the upper mandible is permissible in dark colored birds. Light beaks being preferred, except in blue and silver barred. The eye should appear to be slightly forward of the center of the head. Wealth of feather in back skull and neck gives this appearance. The eye should be pearl.
Bull eyes are acceptable in whites.
The lemon colored eye is acceptable. The eyes should show an alert, intelligent expression. Eye ceres should be fine, light colored and smooth in texture. The neck should be in proportion to the body size. It should be full, giving the neck a thick appearance.