Fig. 3. Shorebird (marbled godwits, willets, and long-billed curlews combined) Mayfield nest success in survey areas with managed, natural, and no wetland basins from 1998 to 2000 in southeastern Alberta. Numbers above bars refer to the fraction of nests hatched of the total nests found. Sample sizes are too small for statistical analysis (the 95% confidence intervals on the Mayfield estimates were as follows: managed, 1998–2000: 5–44%, 13–70%, 3–30%; natural, 1998–2000: 1–100%, 7–97%, 2–74%; no basin, 1999–2000: 4–100%, 1–100%).