Higher intelligence in animals, the ability to know your own thoughts and have self-consciousness is traditionally thought to be rare and mostly confined to humans. Humans have made this assumption for one simple reason which turns out to be, actually, not that smart. The reason many animals, such as birds, have been assumed not to have the higher intelligence of humans is that the six layered structure of the neocortex or forebrain is believed to be what gives humans, above all animals, intelligence and a sense of self. However, new research shows that pigeons and barn owls have neurons connected at right angles creating columns of connected neurons. The conclusion is that it doesn’t matter what structure is formed, super connectivity in a highly active part of the brain is likely the thing that gives rise to higher intelligence, not a particular “type” of brain.

Crows have a particularly large fore-brain and have long been known to be intelligent. New research demonstrates that crows are thinking of their own experience when they are asked to indicate whether they saw a flashing light in an experiment. Crows have been known to recognize faces, hold grudges, solve puzzles and use tools.

Birds resemble humans much less than great apes and other mammals. Perhaps this is why we are so surprised that they could possibly have consciousness, a sense of themselves and their fellow beings (crows are also known to hold funerals). But, as research now shows, this says a lot more about human bias than about the intelligence of birds.

Read More:

https://www.livescience.com/23090-crows-grudges-brains.html

https://www.statnews.com/2020/09/24/crows-possess-higher-intelligence-long-thought-primarily-human/?fbclid=IwAR0ScB6EyC9G7AS3YQsmdFh0YGDsPD2549Etj32aHCBrHGmc1FAXngNv-yE
https://www.livescience.com/53283-why-crows-hold-funerals.html