@article {25523,
	title = {Harris{\textquoteright}s sparrow and the study of it by trapping},
	volume = {41},
	year = {1929},
	pages = {129-177},
	publisher = {Wilson Bulletin},
	url = {http://www.jstor.org/stable/4157485?seq=8},
	author = {Swank, M. H. and Stevens, D. A.}
}
