Background information

Atlas of the Breeding Birds of Ontario (2001-2005): Breeding evidence

Map produced by Andrew Couturier, Bird Studies Canada. Source: Cadman, M.D., D.A. Sutherland, G.G. Beck, D. Lepage, and A.R. Couturier (eds.). 2007. Atlas of the Breeding Birds of Ontario, 2001-2005. Bird Studies Canada, Environment Canada, Ontario Field Ornithologists, Ontario Ministry of Natural Resources, and Ontario Nature,Toronto xxii + 706 pp.
http://birdsontario.org/atlas/index.jsp