What is the outer covering of a Kingfisher?

The outer covering of a Kingfisher is called plumage. Plumage refers to the feathers that cover the body of a bird. Feathers are made of keratin, the same protein that makes up human hair and nails. They provide insulation, waterproofing, and colouration to the bird. Kingfishers have bright and colourful plumage, with many species exhibiting iridescent feathers that change colour depending on the angle of light.