Ecuadorian Tooth-bill (Androdon æquatorialis), John Gould It was a source of great pleasure to me that such an interesting form of Humming-bird had been discovered since my great Monograph was published. 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."