Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. When wolves are on the hunt, a kill rarely goes unnoticed for long. In the elk- and deer-rich areas of northern Yellowstone National Park, ravens are often among the first scavengers to arrive on the scene, swooping down to feast on scraps left behind by the howling canines.  Field biologists have long assumed that the birds simply follow wolves as they track and take down their prey. However, a study published today in the journal Science provides evidence that ravens may be remembering hunting hotspots and scavenging for food, rather than chasing wolves.  “Ravens are known for their remarkable intelligence,” Matthias-Claudio Loretto, a study co-author and wildlife ecologist at Austria’s University of Veterinary Medicine, Vienna, tells Popular Science. “They have excellent spatial memory and are very good at learning from experience. Our study suggests they use those abilities when scavenging. In other words, they’re not just opportunists—they’re planning where to search.” The study tracked about 70 common ravens (Corvus …