Warbler Guy, do you think Connecticut Warbler could appear as early as May 1st in northern Wisconsin?

It's possible, Joannie......Anomalous early arrivals occur among warbler species that typically show up later in the annual vanguard parade — Connecticut, Blackpoll, and Canada, during many years.

Then again, if you go to this year's ebird.org report for Connecticut, not one report I see in northern latitudes of the Upper Midwest is noted before 5/13/15, per:

http://ebird.org/ebird/map/conwar?neg=true&env.minX=-151.91499999999996&env.minY=11.58633002682991&env.maxX=-39.414999999999964&env.maxY=61.927969077338446&zh=true&gp=true&mr=1-12&bmo=1&emo=12&yr=2015-2015&byr=2015&eyr=2015

To see the arrival times and presence of other wood-warblers for this year's migration, see
Greg Miller's excellent page, per:

http://www.gregmillerbirding.com/birders-notebook-2/2013-where-are-the-eastern-wood-warblers-now/

Enjoy the warbler fun! Daniel

danieledelstein@att.net