Beaverhill Lake. 27/05/87; Alberta; 18,050 ha; 53°30'N 113°30'W. A broad, shallow lake set in a rolling landscape containing many smaller water bodies, or "sloughs". The vegetation includes emergent shoreline communities, forest, natural and cultivated grassland. An important breeding and staging area for various migratory waterbirds. Nesting species include a variety of ducks, colonies of Pelecanus erythrorhynchus and Phalacrocorax auritus. Spectacular numbers of birds occur particularly during fall migration, when over 200,000 Anatidae (ducks, geese, swans, etc.) gather. Notable concentrations (for the prairie region) of migratory shorebirds also occur. Ramsar site no. 370. Most recent RIS information: 2001.