Primoli’s Humming-Bird (Metallura Primolinus), John Gould I have been obliged to figure this bird from imperfect materials, the only specimen known being in a very indifferent state of preservation. This illustration has been restored to its original vibrancy by enhancing colors and removing unwanted marks. A monograph of the Trochilidæ, or family of humming-birds was published between 1849 and 1887 by English ornithologist John Gould. This monumental work depicts and describes all the known species of hummingbirds at the time - comprising 418 lithographic plates and information on 537 species."