Robert, I think that duck is a breed of domestic Mallard, not a hybrid! Best, Rob At 12:51 PM 09/23/1999 -0400, you wrote: >A slow hour on the Mall produced a couple of Fall arrivals -- 1-2 >yellow-rumps in a small mixed warbler flock with 2 magnolias and a >chestnut-sided, and a lone junco. > >The odd duck was hanging out on the island at constitution gardens with >mallards, peking ducks, and various hybrids thereamong. At first I >thought it was a mallard X black duck, based on its chocolate back, black >head, and yellow bill. then it turned around to reveal a large white area >on the breast, so it is most likely a black X "mallard" or perhaps of >even more dubious provenance (mallard X dark exotic?). > >Robert Weiner (rweiner@gwis2.circ.gwu.edu) >International Business Department >George Washington University >Washington DC 20052 >202 994 5981 > Rob (Robert) Hilton--*robert@csa.com*--Bethesda, Md. (very close to Washington, DC)