Only a few thousand individuals are left, with no captive population.

"He's never needed the English before, except as a captive population to gouge for taxes."

There are only about 50 individuals remaining, with no captive population.

Had their invasion been less bloody they could have used the captive population to keep them in supplies.

Attempts at breeding among the captive population also failed for the same reasons.

As of July 2009, the global captive population comprised 200 individuals in 45 institutions.

There was no significant difference in any of the characters between the two captive populations.

By making these and other changes, zoo keepers increased the captive population to over 500 today.

"You don't have a captive population that is going to come to you no matter what."

There is a captive population of some 13 adults.