dust-bathe

[duhst-beyth]
verb (used without object), dust-bathed, dust-bath·ing. Animal Behavior.
  1. (of a bird) to squat in dusty soil and fluff dust through the plumage: probably performed to combat ectoparasites.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018