Checked for the Upland Sandpipers today in Frederick County.  I found two in the same field they have frequented in the past week -- SW corner of Buckeystown and Oland Roads.  It was about 11:30 am and raining hard, but they were moving and feeding, about 200 yards down west on Oland Road to the left.  I then checked Lily Pons.  The rain let up long enough to cruise the impoundments taking the path to the right of the white house.  About 4 impoundments in, a Least Bittern hopped up on a cattail, froze for a minute, and then flew to the next impoundment north into more cattails.  Haven't seen one of those for a decade.  Good birding.  David