Fig. 1. Map of study area in southern Alberta, with survey sites listed as being in areas of managed, natural, or no wetland basins. Numbers in parentheses after location represent the number of 5 km long routes in that area (and see Table 1). Asterisks after site names show survey sites that were nest-searched between 1998 and 2000 (1 asterisk = one 2-km2 area of survey route was searched; 2 asterisks = one 2-km2 area of each of two survey routes were searched). Dark lines and splotches represent rivers and lakes.