The Single Eagle Feather

[Carlo]

From what I read, the eagle feather says that the wearer does have his own arms.
If he wears his own arms/badge why would he nead a feather? The badge would show it.
On the other hand you might want to be recognisable as a member of a clan and therefore wear the clan badge. At that time it makes sense to wear the feather to show that you would have your own arms.

Obviously I might be wrong. What I'm saying is, that from my point of view the feather makes more sense when worn with the clan badge.