Ed, 

The 1893 hurricane traveled almost all the way across the Atlantic, spending more than 12 days over open water.  Hanna will not have done that.  The last 4.5 days of the 1893 hurricane's path, which was a steady, straight line, were as a major hurricane.  Hanna has been slowly meandering (almost crawling at times) as a tropical storm and briefly as a hurricane in a much smaller part of the ocean.  You can see the 1893 storm track and intensity here: http://weather.unisys.com/hurricane/atlantic/1893/index.html.

I believe that storms of Hanna's ilk don't normally bring the full complement of seabirds that a more powerful storm such as Isabel, to places as far from the landfall point as Washington, DC.  Isabel (a large storm that had once been a category 5 hurricane over the open ocean) brought storm-petrels into DC, Hunting Creek in nearby Virginia, and Charles County, etc.; Ernesto (briefly a hurricane days before North Carolina landfall and a strong tropical storm hitting North Carolina) brought Sooty Terns and two jaegers into DC and Montgomery County, etc.  

I should have been specific in my first post.  I am not expecting storm-petrels far inland, near DC, from Hanna, because this storm does not look to be another Sea Islands Hurricane.  But every storm is different, and I will be down along the Potomac if the current track prediction pans out.  

Best, 

Rob