Scientists tracked ravens across Yellowstone, and their discovery sheds light on a behavior that’s never been seen before.

New research shows ravens do not follow wolves to find food. Instead, they remember hunting areas and return later.

A snowy valley in Yellowstone National Park appears to be dotted with a party of black silhouettes, a rampage of ravens crowding over what seems like a reddish, meaty carcass. With pointy beaks, the ...