Blue-tailed Sylph (Cynanthus cyanurus), John Gould The accompanying Plate offers but a feeble representation of a Humming-Bird, the beauty and elegance of which are in just accordance with the luxuriance of the glorious country it inhabits, namely, the temperate regions of the Andes, from the Equator northwards to the Isthmus of Panama, or, more correctly speaking, the countries of Ecuador, New Grenada and Venezuela. 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."