How much do bears move back and forth across the USA/Canada border?
Bears do not recognize political boundaries, so it is likely that some North Cascades grizzlies regularly cross and re-cross the international boundary. Some may live primarily south of the border, while others live north of it. Grizzly bears observed in the southern area of the North Cascades Ecosystem would have home ranges that do not include portions of Canada. Research is needed to learn more about North Cascades grizzly bear distribution and movement patterns.