Yellowstone Has Fewer Elk, So Wolves Form Bigger Packs To Hunt Bison
From Cowboy State Daily:
When wolves were first reintroduced to Yellowstone National Park in the mid-1990s, there were about 20,000 elk in the park’s northern herd. Now there are roughly 8,000.
Meanwhile, the opposite has happened with bison in the area with their numbers ballooning from about 500 to roughly 4,460.
And accordingly, wolves have started to eat more bison. They frequently scavenge carcasses, but also sometimes are daring enough to hunt the huge, lumbering beasts.