Little Hermit (Phaëthornis Eremita), John Gould This species must not be confounded with the Trochilus pygmæus of Spix or the Trochilus rufigaster of Vieillot; from the former it differs in being of a larger size, in the buff of the under surface being of a lighter and purer hue, in the black mark on the chest being smaller and less conspicuous, and in the more cuneate form of the tail, all the feathers of which are largely tipped and edged with buff; while from Vieillot’s bird, if his description and figure be correct, it differs in the two middle tail-feathers being less developed, and in their tips being buff instead of white. 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."