These are bird observations from downtown Baltimore, fall migration '04.
Most seem to be victims of lights on at night at buildings.

Note one day I saw a female common yellowthroat stuck under a hotel glass
awning at dawn.  She stayed stuck all day.  Nearby in some weedy garden
areas there was a male common yellowthroat.  On other occasions downtown I
have found a dead common yellowthroat and one of the opposite sex hanging
around.  Do they migrate in pairs?

Count Species                 Sex Date State
1 Summer tanager         U-Juv 1-Sep dead
1 common yellowthroat Male 1-Sep live
1 ovenbird         Unknown 2-Sep dead
1 OVENBIRD         Unknown 3-Sep live
1 ovenbird         Unknown 4-Sep dead
1 common yellowthroat Female 1-Oct dead
1 Common yellowthroat Male 3-Oct dead
1 red-breasted nuthatch Unknown 4-Oct dead
1 red-bellied woodpecker Unknown 4-Oct dead
1 Common yellowthroat Female 4-Oct live
1 ovenbird         Unknown 4-Oct live
1 Common yellowthroat Male 6-Oct live
1 Sparrow?         Unknown 6-Oct live
1 sparrow?         Unknown 6-Oct live
1 Common yellowthroat Female 7-Oct dead
1 Dark-eyed Junco         Unknown 9-Oct dead
1 ovenbird         Unknown 9-Oct live
1 Dark-eyed Junco         Unknown 9-Oct dead
1 common yellowthroat Male 10-Oct dead
1 common yellowthroat Female 15-Oct live
1 bobwhite quail         Unknown 15-Oct dead
1 Northern Flicker Male 15-Oct dead
1 Ovenbird         Unknown 18-Oct dead
1 ovenbird         Unknown 18-Oct live
1 White throated sparrow Unknown 18-Oct dead