Bear competition

Hello world,
Grizzly bears have been spotted in Wapusk National Park, the bear capital of the world. Most scientists agree that the grizzly migration has more to do with a growing number of bears rather than global warming. Some even speculate that the polar bears would be making room for their cousins within the next century because of the fleeing ice. Polar/Grizzly bear fights are expected to not happen often, because most polar bears leave the area before the Grizzlies wake up from hibernation. Some even hope for grizzly/polar bear hybrids. I do think this is big in the bear world, but I think the polar bears have bigger fish to fry (so to speak)
Here's the link;
http://news.nationalgeographic.com/news/2010/02/100226-grizzly-bears-polar-bears-hybrid-canada/