Blue-Crest (Orthorhynchus christatus), John Gould It will have been noticed, while perusing the pages of the present work, that many species of Hummingbirds are confined to very small areas of country, some to the cones of lofty mountains, and some to the craters of extinct volcanos, while others are migratory, and extend their range over vast regions. 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."