I think we're all suffering from August doldrums! Anticipating
migrants while suffering the presence of mere dispersers. If it helps
at all, most dispersers ALSO migrate, so it seems fair, at the "end"
of summer (which, of course, is different for different species), to
use EITHER term for those species that migrate THROUGH an area (even
if some of them breed nearby, like BH Grosbeaks) - Jim Greaves, MT