Fig. 2. Percentage of marked birds of specific breeding stages known to have been present in the survey area (Kitsim, 10 km east of Brooks, Alberta), that were observed during the survey. Data from willets and marbled godwits combined, and data from 1995 to 1998. Small numbers above bars refer to the fraction of birds seen of all available in that category. “Prelay” refers to the total number of marked birds that later (within 2 wk) incubated a nest in the survey route area; “Incub” refers to the total number of marked birds known to have an active nest in the survey route area; “failed” is the total number of marked birds with recently failed nests, whose nests had been in the survey route area; “brood” is the total number of marked adults attending broods that had been seen in the survey route area within 3 d of a survey date (by independent brood surveys).