This paper derives the welfare loss to landowners from wildlife damages, which is not the same as the value of yield loss. The paper then estimates the welfare loss to Ontario landowners using willingness to tolerate losses as an indication of on-farm wildlife benefits. Results for Ontario fieldcrop producers in 1998 suggest that the welfare loss is 50% of the value of the yield loss. Willingness to tolerate losses varies by several variables including wildlife species and crop type.