Photos: Grizzlies & Black Bears Cross the Trans-Canada Highway

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Wildlife passes

Credit: Banff Wildlife Crossings Project
To help wildlife safely navigate their natural habitats, crisscrossed with human-built roads and other structures, conservationists have built special…Read More »

crossings. And it turns out some four-legged furballs are utilizing these bridges. A genetic study by Montana State University scientists revealed, for instance, that grizzly bears (Ursus arctos) and [black bears (Ursus americanus) pad across the Trans-Canada Highway through underpasses and overpasses. The research, detailed Feb. 18, 2014, in the journal Proceedings of the Royal Society B, suggests at least one way to keep bear populations healthy in an increasingly human-impacted world. "It is clear that male and female individuals using crossing structures are successfully migrating, breeding and moving genes across the roadway," Michael Sawaya of Montana State University and his colleagues wrote in the journal article.

Here, a grizzly bear is using a box culvert underpass to traverse across the Trans-Canada Highway. [Read more about the underpasses for grizzlies and black bears]   Less «

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Jeanna Bryner, LiveScience Managing Editor

Jeanna Bryner

Before becoming managing editor, Jeanna served as a reporter for Live Science and for about three years. Previously she was an assistant editor at Scholastic's Science World magazine. Jeanna has an English degree from Salisbury University, a Master's degree in biogeochemistry and environmental sciences from the University of Maryland, and a science journalism degree from New York University.
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