D’Orsery’s Hermit (Phaëthornis Oseryi), John Gould What could have induced the late Prince Charles Bonaparte and Dr. Reichenbach to separate this bird generically from the genus Phaëthornis I know not. 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."