Crows tend to live well in the city; there is an abundance of food, and it's easier to raise a family. It is also safer, partly because they won't be hunted as a pest and also as part of how they communicate with their young and peers. As crows encounter danger and trauma, they tend to share this information. Over time as the knowledge about threats and dangers passes through larger areas, the populations of these birds become more informed and can avoid problems better, so they will be able to thrive and function in an area quite well.
