Since migration has slowed a bit the last couple of days here in central MN, allow me to recommend the Princeton sewage ponds (also known as CR 2 ponds). There's been a decent mix of waterfowl there (up to 15 species) - sprinkled among the numerous Ring-neckeds are Canvasbacks (60+), Redheads (a few) and all three mergansers (not every day). Between 400 & 500 birds were present today at 12:45.
Checked the Isanti CR 5 Great Blue Heron rookery over lunch (about a mile east of Sherburne CR2, which is functionally the same road) - last week it had 30+ herons nesting, noted none visible today (which is, admittedly, not a great day to be at the top of trees). Good (but chilly) birding to all! Al Schirmacher Princeton, MN Mille Lacs & Sherburne Counties (Awaiting the next wave)