Disease and migration have reduced the wolf population in Yellowstone National Park by half since 2003 . . .
The gray wolf population in Yellowstone National Park has dropped to about 80 wolves, officials say — less than half of the high population mark in the park.
While Yellowstone leaders won’t have an accurate count until the fall after surviving pups are visible, the park’s top biologist doesn’t expect numbers to rise dramatically after litters are included in population estimates.
“Unfortunately, many of them die. Gray pup survival is about 7 percent,” Doug Smith, long-time project leader for the Wolf Restoration Project in Yellowstone, said in a Wednesday video broadcast on the park’s Facebook page.