Seth-Smith, David, ed. Birds of Our Country and of the Dominions, Colonies and Dependencies their Life, Eggs, Nests and Identification. London: Hutchinson and Co., 1932 or later

Seth-Smith, David, ed. Birds of Our Country and of the Dominions, Colonies and Dependencies their Life, Eggs, Nests and Identification. London: Hutchinson and Co., 1932 or later, Volume: Gilbert B118. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/527432 Accessed December 26, 2025.