Food may also be taken to deeper storage chambers to store up for hard times, or when a female is raising young.

"If they're successful in raising young, they'll come back because success is what's it's all about."

On average they raise 2.5 young each season.

After mating, their travels become more urgent to find a home to raise young.

That would have to wait until the world became a safer place to raise young, though.

When a woman is raised too young, there's a reason.

Entire family groups cooperate in raising young by gathering food and nesting materials.

These burrows were likely used by many individuals to hide from predators, raise young, or stay warm.

This was not even a good place in which to raise young.

In 1993, 13 pairs of cranes raised 22 young.