Our next free Marsh Discovery Trail guided walk is at noon on Thursday.       
   Our next free First-Sunday walk is this Sunday at DeKorte Park at 10 a.m. We'll try the marsh Discovery Trail and other hotspots for shorebirds.
   Our Tuesday MDT walk turned up a few Short-billed Dowitchers, hundreds of Semi-palmated Sandpipers, many Greater and Lesser Yellowlegs, and a few dozen boisterous Forster's Terns.