Question

look at these details from a paragraph about the same topic: the entire crow family helps raise the youngest birds. many crows will help build a new nest. crows hunt together and protect each other. choose the main, or central, idea that ties all the details together. crows live mostly in open areas with plenty of grasslands. crows can share information with other crows by cawing. crows build nests as a group.

Explanation:

The details mention the entire crow family helping raise young, many crows building a nest, and crows hunting and protecting together, all showing they work together.

Answer:

Crows often work together.