8 Mar 1971
District of Columbia
- Washington; National Zoo
- NAGRA III-B
FAMILY OF FIVE CYGNETS AND TWO ADULTS WITH THE CYGNETS MAKING MOST OF THE NOISE. CYGNETS BEGGING TOWARDS THE OBSERVER.
ML: Because Whooper and Trumpeter Swans were both recognized under Cygnus cygnus in the LNS collection at this time and that this recording represented captive birds not identified to subspecies, it is unclear whether C. [c.] cygnus or C. [c.] buccinator was involve here d. (CAM - 27 October 2004)