CaRMS (2019). Anseriformes. Accessed at: http://www.marinespecies.org/CaRMS/aphia.php?p=taxdetails&id=2681 on 2019-02-20
Kennedy, M.K., L. Van Guelpen, G. Pohle, L. Bajona (Eds.) (2019). Canadian Register of Marine Species. Anseriformes. Accessed at: http://www.marinespecies.org/CaRMS/aphia.php?p=taxdetails&id=2681 on 2019-02-20
basis of recordHarrison, P. (1985). Seabirds: an identification guide. Revised edition. Christopher Helm Publisher. A & C Black: London, UK. ISBN 0-7136-3510-X. 448 pp. (look up in IMIS) [details]
Present Inaccurate Introduced: alien Containing type locality