Corvids and Parrots, and Now Icterids, Are Some of the Brightest Birds That You'll Encounter

https://news.nationalgeographic.com/2018/03/year-of-the-bird-brains-intelligence-smarts/

Corvids Will Develop Relationships with Humans

https://www.theepochtimes.com/uplift/little-girl-left-food-out-for-birds-but-after-they-follow-her-to-school-strangest-things-show-up_2406655.html

https://owlcation.com/stem/The-Raven-and-the-Wolf-A-Study-in-Symbiosis


https://hubpages.com/animals/The-Bird-Called-Raven


https://hubpages.com/animals/The-Intelligence-of-the-Raven

Corvids Have Emotions and Sharp Minds

http://www.sciencealert.com/crows-ravens-corvids-best-birds-animal-intelligence