The dramatic expansion of the geographical range of coyotes over the last 90 years is partly
explained by changes to the landscape and local extinctions of wolves, but hybridization
may also have facilitated their movement. We present mtDNA sequence data from 686
eastern coyotes and measurements of 196 skulls related to their two-front colonization
pattern. We find evidence for hybridization with Great Lakes wolves only along the northern
front, which is correlated with larger skull size, increased sexual dimorphism and a five times …

The dramatic expansion of the geographical range of coyotes over the last 90 years is partly
explained by changes to the landscape and local extinctions of wolves, but hybridization
may also have facilitated their movement. We present mtDNA sequence data from 686
eastern coyotes and measurements of 196 skulls related to their two-front colonization
pattern. We find evidence for hybridization with Great Lakes wolves only along the northern
front, which is correlated with larger skull size, increased sexual dimorphism and a five times …