Quoth the Raven

The first large-scale assessment of ravens' cognitive abilities suggests that, by four months of age, ravens do about as well as adult chimps and orangutans on tests of causal reasoning, social learning, theory of mind, etc. https://t.co/qyOd3Ae4yc pic.twitter.com/VJQX4QtFVv

— Steve Stewart-Williams (@SteveStuWill) June 22, 2021