Ravens Are More Cunning Than Preschoolers, Study Finds

CBS Local — Ravens are capable of planning for future events and bartering, and will forgo immediate rewards to obtain a better reward in the future, according to a new study.
Researchers at Lund University in Sweden discovered that ravens are more intelligent than most humans give them credit for. This was concluded after a series of four experiments in which the researchers found that ravens will use tools to receive food rewards and delay gratification.
The experiments also showed that