While considering Jackson's voice to be wispy, Cromelin observed Jackson's charisma and vocal inflections to convincingly deliver the underlying theme of "serviceable personas" on the album; ranging from "haughty stripper to a wide-eyed kid who loves long walks on the beach."

Males in the breeding season have elongated head feathers which form a wispy crest that is fluffed and more prominent when the bird gets excited; the crest is shorter in winter and the black areas have paler feather edges, which get worn away as well as the black becoming more glossy in the breeding season.