Variable;"2011 fed";"2011 control";"2012 fed";"2012 control" "Number of early territories";9;14;10;17 "Number of late territories";7;16;8;10 "Mean clutch size in early nests";"4.11 ± 0.11 (9)";"3.85 ± 0.10 (13)";"4.08 ± 0.08 (12)";"3.86 ± 0.10 (14)" "Mean clutch size in late nests";"5.00 ± 0.00 (2)";"4.00 ± 0.31 (5)";"4.00 ± 0.26 (6)";"4.00 ± 0.32 (5)" "Early brood fledging success";"0.74 (9)";"0.84 (14)";"0.89 (10)";"0.85 (17)" "Late brood fledging success";"0.74 (7)";"0.87 (16)";"0.87 (8)";"0.70 (10)" "Mean brood size at fledging in successful early nests";"3.25 ± 0.37 (8)";"3.07 ± 0.20 (14)";"3.78 ± 0.22 (9)";"3.31 ± 0.27 (16)" "Mean brood size at fledging in successful late nests";"4.00 ± 0.55 (5)";"3.86 ± 0.21 (14)";"3.71 ± 0.36 (7)";"3.71 ± 0.18 (7)"