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Wildlife managers estimate die-offs in the tens of thousands. Unusually heavy snows and sustained cold in the Northern Rockies hampered the animal's ability to forage for food, and they starved to death, says this article by Laura Zuckerman. Experts are also finding high mortality among the offspring of mule deer, white-tailed deer and pronghorn antelope.
The
estimated death rate doubled among deer fawns in the Jackson area this year,
rising from 30 percent to 60 percent or more, while the estimated mortality
rate among mule deer fawns in the mountains of central Idaho rose from an
average of 20 percent to 90 percent.
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