{"fact":"Tool use in crows isn't innate; even the most talented individuals need several weeks of practice to master a new tool, highlighting the role of learning and experience.","context":"Tool use is evidently difficult for captive American crows to learn; task proficiency was not universal, some birds never progressed beyond low-proficiency, and the individuals that ultimately mastered the task required several weeks of training to learn to associate dropping stones into the tube’s interior with raising the water level.","source":"LomaJohn T. Pendergraft; John M. Marzluff; Donna J. Cross; Toru Shimizu; Christopher N. Templeton, American crows that excel at tool use activate neural circuits distinct from less talented individuals, 10.1038/s41467-023-42203-8","index":582}