In the D.C. region, conversations often start with, “What do you do?” WTOP’s new series “Working Capital” profiles the people doing the work that makes the D.C. region so unique.

The often have loud, echoing calls. Piercy, the panda, with bamboo at the Bramble Park Zoo in Watertown. In January, the zoo welcomed two red-tailed hawks, both rescued through the zoo's ...