Quote Originally Posted by MacMillan of Rathdown View Post
No, you may wear a real feather behind your clan badge if you so choose.


An armiger has two options when it comes to the badge worn on his bonnet. He may wear his own badge, with or without an attached metal feather, or he may wear an ordinary clan badge. What he should not do is affix a small metal feather to the clan badge, although he may, when appropriate, wear an actual feather behind either the clan badge or his personal crest badge.
I have also seen armigers and clan chiefs wear only their crest and wreath (in metal form, obviously) on their bonnet with the appropriate number of real feathers tucked behind it.