@article {37657,
	title = {Song and plumage phenotypes in a contact zone between subspecies of White-crowned Sparrow (Zonotrichia leucophrys)},
	volume = {68},
	year = {1990},
	pages = {2625-2629},
	publisher = {Canadian Journal of Zoology},
	url = {http://article.pubs.nrc-cnrc.gc.ca/RPAS/RPViewDoc?_handler_=HandleInitialGet\&calyLang=eng\&journal=cjz\&volume=69\&articleFile=z91-294.pdf},
	author = {Lein, M. Ross and Corbin, Kendall W.}
}
