Cinnamon Firecrown (Eustephanus fernandensis), John Gould Amongst the advantages which the issue of the present ‘Supplement’ bestows on me may be reckoned the opportunity which it gives of correcting certain mistakes in the ‘Monograph,’ which were due to the imperfect knowledge possessed by ornithologists at the period when the latter work was written. 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."