Mazeppa Hermit (Glaucis Mazeppa), John Gould In figuring this bird as distinct from G. hirsuta, I must frankly admit that I am dealing with a difficulty in a manner which I believe no ornithologist can say is right or wrong. 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."