The Birds of Canada, Revised Edition. National Museum of Natural Sciences, Ottawa.
Â« Trends in numbers of tropical- and temperatewintering migrant landbirds in migration at Long Point, Ontario, 1961-1988 Â» dans Hagan III, J. M. et D. W. Johnston (Ã©d.), Ecology and conservation of Neotropical migrant landbirds, Washington, D.C., Smithsonian Institution Press, 1992, p.