Simons’s Thorn-bill (Rhamphomicron dorsale), John Gould This beautiful species was discovered by Mr. Simons during his exploration in the Sierra Nevada of Santa Marta, Colombia, and was described by Messrs. Salvin and Godman, to whom I am much indebted for the loan of the typical specimens. 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."