@article {36562,
	title = {Population declines in North American birds that migrate to the Neotropics},
	volume = {86},
	year = {1989},
	pages = {7658-7662},
	publisher = {Proceedings of the National Academy of Sciences},
	author = {Robbins, C. S. and Sauer, J. R. and Greenberg, R. S. and Droege, S.}
}
