British Columbia’s coastlines are of international importance for waterbirds. During winter, vast numbers of loons, grebes, cormorants, herons, swans, geese, ducks, shorebirds, and gulls can be found feeding and roosting in bays and estuaries, and along the rocky intertidal beaches of the BC coast. With increasing pressure from development and human population expansion, long-term data on the abundance and distribution of waterbird species is required to monitor and track changes in waterbird populations and habitat use.