Abstract
A 1.8 MW wind turbine was installed at the wester nend of the Pickering Nuclear Generationg Station, and began operation in the autumn of 2001. It was placed in an area with a rich bird life throughout the year; a river and marsh border on the west, Lake Ontario on the south, parkland to the north. To estimate bird mortality associated with the wind turbine, ground searches were made from late January to early December 2002, covering a radius of at least 50 m around the tower. Searches were made as often as three times a week during the main migration season, and once per week most of the rest of the year. A predator removal study was conducted, and ovservations of bird behaviour were noted during each visit.