Results of structure analyses for Kirtland’s warbler samples collected from Oscoda County, Michigan in three time intervals: 1903–1912, 1929–1955 and 2008–2009. A model of K = 2 was most supported. Each column represents an individual where cluster membership assignment is on the y-axis.
Wilson et al. BMC Ecology 2012 12:8 doi:10.1186/1472-6785-12-8