WordNet sense 1 (resembling a plume):

plumelike

WordNet sense 2 (having or covered with or abounding in plumes):

plumed

WordNet sense 3 (having or covered with feathers or plumage):

feathered

WordNet sense 4 (adorned with feathers or plumes):

feathery

WordNet sense 5 (provided with something intended to increase its beauty or distinction):

adorned, decorated