Weight changes varied a lot for the nine female polar bears studied for 8 to 11 days. (sciencenews.org)
The figure — 84 individuals, compared to 44 estimated in the 1980s from bear tracks — shows that «we have a much more sophisticated technology» for tracking bear numbers, says Chuck Schwartz, head of the Interagency Grizzly Bear Study Team. (sciencemag.org)
Chad Dickinson, a biological science technician with the Interagency Grizzly Bear Study Team, fits a Global Positioning System collar on a male grizzly bear in Yellowstone National Park. (sciencedaily.com)