@article {41703,
	title = {The effects of supplementary winter seed food on breeding populations of farmland birds: Evidence from two large-scale experiments},
	volume = {44},
	year = {2007},
	month = {2007},
	pages = {920},
	author = {Siriwardena,, G. M., and Stevens,, D. K. and Anderson,, G. and Vickery,, J. A. and Calbrade,, N. A. and Dodd, S.}
}
