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Nest density and survival of two farmland birds (dickcissel, Spiza americana and red-winged blackbird, Agelaius phoeniceus) were evaluated in four early-succession conservation practices: (1) large forest block [6–8 year old trees], (2) riparian forest buffer [1–3 year old trees], (3) monotypic switchgrass [Panicum virgatum] buffer [no trees], and (4) diverse forb-native grass buffer [no trees] over...