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Ravens in Yellowstone use memory to find wolf kills up to 155 km away, not by following wolves.
A new study in Science reveals that ravens in Yellowstone National Park use long-term spatial memory to locate wolf kills, flying up to 155 kilometers in a day to revisit high-probability sites like open valleys, rather than following wolves in real time.
Tracking 69 ravens and 20 wolves over 2.5 years, researchers found ravens rarely followed wolves and instead relied on mental maps of past kills, arriving at carcasses within days without direct tracking.
The findings challenge the idea that ravens depend on real-time predator cues, highlighting their advanced cognitive abilities and strategic foraging.
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Los cuervos de Yellowstone usan la memoria para encontrar lobos que matan a 155 km de distancia, no siguiendo a los lobos.