To me, September 1 seems an awfully early date for migrant Nashville
Warblers.  In fact the one I saw along Indian Creek this morning (Prince
George's county near Lake Artemesia) is my earliest fall record EVER for
this area.  With that background, what do we make of it being the THIRD
one reported in this forum today?

Because the species nests in western Maryland, nothing useful about early
arrival dates can be gleaned from the bar charts in the yellow-book.  (A
defect I hope will be fixed in the next edition.)  Though a bit dated,
Stewart and Robbins (1958) is much more useful for answering this kind of
question.  For fall migration, they list the EXTREME arrival date as ---
SEPTEMBER 4.  My copy of the Virginia checklist (1987) has fall arrival
for that state on September 5.

So what's going on here?  Is Stewart and Robbins wrong?  Are Nashville
Warblers migrating earlier than they used to?  Or is this shaping up to be
a really weird fall migration?

Dave
David Mozurkewich
Seabrook, PG MD USA
mozurk @ bellAtlantic.net