Excerpt from Life Histories of North American Gallinaceous Birds: Orders Galliformes and Columbiformes
This is the ninth in a series of bulletins of the United States National Museum on the life histories of North American birds. Previous numbers have been issued as follows:
107. Life Histories of North American Diving Birds, August 1, 1919.
113. Life Histories of North American Gulls and Terns, August 27, 1921.
121. Life Histories of North American Petrels and Pelicans and their Allies, October 19, 1922.
126. Life Histories of North American Wild Fowl (part), May 25, 1923.
130. Life Histories of North American Wild Fowl (part), June 27, 1925.
135. Life Histories of North American Marsh Birds, March 11, 1927.
142. Life Histories of North American Shore Birds (pt.1), December 31, 1927. 146. Life Histories of North American Shore Birds (pt.2), March 24, 1929.
The same general plan has been followed, as explained in previous bulletins, and the same sources of information have been utilized. The nomenclature of the new Check List of the American Ornithologists" Union has been followed, but it has seemed best to continue in the same order of arrangement of families and species as given in the old (1910) check list.
This is the first group in which any considerable number of subspecies have had to be treated. An attempt has been made to give as full a life history as possible of the best-known subspecies and to avoid duplication by writing briefly of the others and giving only the characters of the subspecies, its range, and any habits peculiar to it. In many cases certain habits, probably common to the species as a whole, have been recorded for only one subspecies; such habits are mentioned under the subspecies on which the observations were made. The distribution gives the range of the species as a whole, with only rough outlines of the ranges of the subspecies, which can not be accurately defined in many cases.
The egg dates are the condensed results of a mass of records taken from the data in a large number of the best egg collections in the country, as well as from contributed field notes and from a few published sources.
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