USAToday reporter Janice Lloyd wrote an extensive story exploring the 33% decrease in the Yellowstone National Park wolves from their peak in 2003.

YELLOWSTONE NATIONAL PARK, Wyo — A dozen tourists in parkas huddle around wolf researcher Colby Anton in the northern range of the park, an area famous for gray wolves, to catch a glimpse of the images on his digital camera.

The wolf watchers have become a familiar scene since the animals were reintroduced into the park in 1995 after being gone for nearly 70 years. The wolves have fueled a $35 million-a-year industry as cars full of tourists spend hours from dawn to dusk looking for wolves and trading tales.

Now the tales are changing…  

[read the entire USAToday article]