{"fact":"New Caledonian crows were observed to learn and adapt their choices during experiments, increasingly choosing the container that was more often rewarded over time.","context":"choices of the bent tube increased over the course of the experiment… likely because the reward schedule of the experiment favored this tube (rewarded in 6 of 10 trials).","source":"Sarah A. Jelbert; Alex H. Taylor; Russell D. Gray, Reasoning by exclusion in New Caledonian crows (Corvus moneduloides) cannot be explained by avoidance of empty containers., 10.1037/a0039313","index":247}