This is the nineteenth 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
This is the nineteenth 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