Daily probability of predation of junco nests, food availability (mean dry weight of insects per trap array), and clutch size in relation to Julian date, burn severity, and year postfire. Partial regressions of daily probability of nest predation are presented as a function of Julian date and burn severity with 95% confidence intervals (CIs). In both the first (A) and second (D) years postfire, nests in patches burned at intermediate severity (I) experienced significantly lower probability of predation than those in patches burned at low or high severity (L, H, respectively) while predation probability increased seasonally. Dashed lines represent standard errors. Mean dry mass of insects per array in the first (B) and second (D) years postfire is presented as a function of Julian date in forest patches burned at low (circles), intermediate (triangles), and high (squares) severity (± SE). Predicted estimates from a partial regression of clutch size as a function of log(nest-initiation date) and burn severity are plotted with 95% CIs. Clutch sizes for nests built in patches burned at low and high severity (“L, H”, year 1, C) and all severities (“L, I, H”, year 2, F) are pooled for presentation.
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