Grey-wing Trumpeter
We often associate the word plume with wearables such as hats and costumes. Sometimes, a bunch of these plumes might be referred to as pumules. As an adjective, something that looks feathery is plumose. Ornithologists might occasionally describe a bird as plumose but more commonly I hear it to describe things that look like feathers but are not feathers—like plants and ferns such as the asparagus fern whose latin name is Asparagus plumosus.