Crows adapt to their environment fast and are very intelligent which can be seen in the video below.
Crows can mimic the sounds of other animals and have a sophisticated system of communication.
Historically crows have been a nuisance for crops so they have often been attacked by humans to decrease thier population. Many communities still have a negative image of crows because of our historical incompatibility.
Crows can "dive bomb" people or animals if they approach a nest. For nesting crows will pair off and produce 6-8 young. At least one of the young crows will stick around to get food and protect the nest for the next season.
Crows tend to live in small groups that are not necessarily determined by 'family'. It's more like independent tribes of crows with very few nest related crows in a group.
More crow facts
here.