I dont know if this has been previously stated but speaking of their intteligence they are able to remember people that have harmed them and start avoiding them or attack them( if they get shot at while going over a farm they will avoid the farm and the word to spread to other ravens and even go into further generations who know to avoid it), excellent at making and using tools to solve problems. They also have been observed timing traffic lights and putting a nut in the street when its red and let cars run over it to crack it while green and wait for it to turn red again to retrieve it. Intelligence like this was once thought to belong to great apes, dolphins, and elephants. I think its pretty cool and find animals fascinating too bad humans like to kill everything