Kurt, The best Pied-billed Grebe counts I can find are: 103 at Deal Island WMA on 7-3-80 when it was a common breeding bird there 82 at Port Tobacco on 3-7-54 80 in Newport Bay area, Worcester Co. on 11-1-52 79 on the Annapolis CBC on 1-2-55 79 at Loch Raven on 10-22-86 78 on the Potomac below DC on 10-30-88 75 in DC on 10-18-95 The boudaries around the edge of the Potomac can be confusing, but a good map can sort it out. Bob Ringler