Which species that frequents WI and/or MN has the longest migration window?
By window I mean the differential between the earliest arriving migrants and the latest to leave - by migration I mean leaving WI and/or MN completely at some point - and obviously the window does not include nesting activity. My guess is that it would be a shorebird of some kind - since there are June/July "fall" arrivals, and some hangers-on linger until November, but.... Al Schirmacher Princeton, MN Mille Lacs & Sherburne Counties
