Glenn Stewart, coordinator of the predatory bird research program at the University of California at Santa Cruz, banded the chicks' legs so that scientists can track them and collect data.
The falcon chicks were born last month on a ledge atop San Jose City Hall. Stewart said all three chicks are healthy. A fourth chick that hatched a few days after its siblings struggled during its short life and died within a week.
The city extended a falcon-chick naming contest it is holding for youth between 5 and 18. Nominations can be submitted by midnight tonight to firstname.lastname@example.org or by mail to: Falcon Naming c/o Mayor's Office, 200 E. Santa Clara St., 18th floor, San Jose, CA 95113.
Next week, the nominations will be open for online voting. The chicks will be named before they take flight.
This is Clara's fourth nesting season at City Hall and her second with mate Esteban Colbert.