Table 4. Estimated number of nests destroyed by forestry operations annually, derived by combination of avian nest densities, annual harvest area estimates, and proportion of the annual harvest presumed to occur during the migratory bird breeding season. Min and Max columns correspond to applying the low (MDD) versus high (EDR) density estimates, respectively, as per Table 1. The Low disturbance estimate assumes 12% of the annual area harvested (from Table 3) occurs during the breeding season following from FPAC (R. Décarie, unpublished manuscript), and the High disturbance estimate assumes that 26% of the annual area disturbed (from Table 3) occurs during the breeding season, corresponds to the Ontario estimate provided by a submission to the Commission for Environmental Cooperation of North America (CEC 2003).