I seem to recall someone else reporting this bird earlier but in case I'm wrong there was a Henslow's Sparrow calling from the portion of the Rapids Lake Unit of the MN Valley NWR that is adjacent to and east of Co. Rd. 45(south of Carver). There is a parking area there but I walked into the field along a gated road just north of the parking area and had to walk quite a ways in before I heard it calling well off the path at about 9am. Bob Williams, Bloomington