@article {35445,
	title = {Expansion of the zone of hybridization of northern flickers in Alberta},
	volume = {99},
	year = {1987},
	pages = {690-692},
	publisher = {Wilson Bulletin},
	url = {http://www.jstor.org/stable/4162476},
	author = {McGillivray, W. Bruce and Biermann, Gloria C.}
}
