Henslow's Sparrow, 200 yards east of Blue Hill Trail, Sherburne Refuge along CR 9. Single Mourning Warbler singing on the trail (three last week); Red-headed Woodpecker on the corner of CR 8 & 42. 47 species overall on this morning walk with Mark Junghans. Al Schirmacher Princeton, MN Mille Lacs & Sherburne Counties