Plume (feather)
A plume is a special type of bird feather, possessed by egrets, ostriches, birds of paradise, quetzals, pheasants, peacocks and quails. They often have a decorative or ornamental purpose, commonly used among marching bands and the military, worn on the hat or helmet of the wearer. Famously by the blues & royals and the Life Guards. When used on military headdresses, the clipped feather plume is referred to as the hackle.
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