Carrion crows perceive likelihood
Shutterstock/Rudmer Zwerver
Crows could make selections in response to the chance of getting a reward – a cognitive feat recognized to mathematicians as statistical inference, and infrequently discovered outdoors of primates.
“‘Chicken mind’ is commonly used as an insult, however that’s not likely the case,” says Melissa Johnston on the College of Tubingen in Germany.
Her workforce skilled two carrion crows (Corvus corone) to peck at 9, different-coloured symbols to obtain a reward: a small meals pellet or worms. Every image was related to a unique likelihood of receiving …