I may have seen this bird two weeks ago over the National Zoo!  I too  
thought it was a broad-winged Hawk, but since I'm not an "expert"  
figured I must be off - but the missing primaries was striking. I was  
with a group of kids I had in a class and it was actually one of the  
students that saw the hawk and noticed its strange appearance.
Sydney
On Nov 14, 2006, at 6:28 PM, Fred Fallon wrote:

> I know that any Broad-winged Hawk seen after October is "really" a  
> Red-shouldered, but this one circled overhead so close and for so  
> long no other ID was possible. Its flight was erratic with much  
> seemingly pointless flapping. Several primary feathers were  
> missing. It eventually random-walked its way NORTH along the beach.
> This at Holland Point (on Rt 261 just north of North Beach on the  
> AA side) at ~ 3:30 pm. In the Bay were ~ 7 White-winged Scoters  
> along with 500 Surf's, 2000 Bufflehead, and ~10 L Scaup. No  
> Myarchus FC was seen.
>
> Fred Fallon
> Bowie MD