Is this a fleur-de-lis hood ornament, or something else? I came across this interesting piece:



Now, I'm not sure it is a hood ornament, but I would like to know what it is. Any help would be appreciated.
Looks like a minifigure headgear accessory, specifically a feathered headdress plume (no. 6029b):



It's appeared in a number of sets, most with pirate, castle, or western themes and sometimes as an extra part. It's sometimes packaged in a "Plume Wheel" (i.e. still in a circular runner with some cattle horns), and is typically used for islander minifigs: