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Bradley, N. L.; Leopold, A. C.; Ross, J.; Huffaker, W. 1999. Phenological changes reflect climate change in Wisconsin. Proceedings of the National Academy of Sciences of the United States of America 96: 9701-9704. Fuller, E. 2000. Extinct birds. Oxford University Press, Oxford. IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.1). Available at: http://www.iucnredlist.org. (Accessed: 19 June 2012). Mowbray, T. B.; Ely, C. R.; Sedinger, J. S.; Trost, R. E. 2002. Canada Goose (Branta canadensis). In: Poole, A.; Gill, F. (ed.), The birds of North America, The Birds of North America, Philadelphia, Philadelphia, U.S.A. Murphy-Klassen, H. M.; Underwood, T. J.; Sealy, S. G.; Czyrny, A. A. 2005. Long-term trends in spring arrival dates of migrant birds at Delta Marsh, Manitoba, in relation to climate change. The Auk 122: 1130-1148. |
| Citation: | BirdLife International 2012. Branta canadensis. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 19 June 2013. |
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