mortality

What’s killing desert bighorn lambs?

November 8, 2018

When New Mexico removed desert bighorn sheep (Ovis canadensis mexicana) from the state’s list of threatened and endangered species, biologists had a pretty good ...

Mating bats go for the silent treatment

June 15, 2018

Giving someone the “silent treatment” during courtship might not be the best strategy for romance. But new research shows hoary bats (Lasiurus cinereus) fly ...

Yellowstone Grizzly Bear Deaths Increase

January 7, 2016

Last year, 59 grizzly bears (Ursus arctos) died in Yellowstone — the highest number of bear deaths in the region since 1970. Still, the impact may not be as large ...