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American White Pelican Blood, Donald A.
1993
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Abstract: British Columbia has only one nesting colony of American White Pelicans. It is located at Stum Lake in White Pelican Provincial Park in the Chilcotin region, 70 kilometres west of Williams Lake. Because these colonial birds are migratory, have only a single nesting site, and feed on fish in shallow lakes sometimes hundreds of kilometres from Stum Lake, they are particularly vulnerable to a variety of threats. At Stum Lake, both natural and human- influenced events can affect nesting success. Fluctuating water levels are the most frequent natural cause of colony abandonment. In drought years, nesting islands become connected to the mainland, allowing access to land-based predators. A single severe flood or a series of wet years can result in inundation of islands. Over the thousands of years they have existed on this continent, white pelicans have been able to cope with these natural events and maintain their overall population. In recent decades, however, various drainage, irrigation, and diversion projects, particularly in the United States, have resulted in the demise of some colonies.
 
Blood, Donald A.. 1993. American White Pelican. Ministry of Environment, Lands and Parks. Species At Risk brochure
 
Topic: Species and Ecosystems at Risk
Keywords: species at risk, american white pelican, pelecanus erythrohynchos, sara, endangered, threatened
ISSN:  Scientific Name: Pelecanus erythrorhynchos
ISBN: 0-7726-7466-3 English Name: American White Pelican
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