A phenological comparison of grizzly (Ursus arctos) and polar bears (Ursus maritimus) as waterfowl nest predators in Wapusk National Park

Relatively little is known about the feeding ecology of grizzly bears ( Ursus arctos ) in Wapusk National Park. Other ursids, polar bears ( Ursus maritimus ), are well known predators of waterfowl nests in the area, and grizzly bears could feasibly make use of such resources. However, since the arri...

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