I met Mike Madsen, Andy Sigler, and Bob and Karen Fisher at Bloom School at noon today. Andy and Mike had just come from Cooling Sod Farm, where they reported up to 7 Buff-breasted Sandpipers and a couple of Upland Sandpipers among the hundreds of Killdeer. Best viewing of these birds today was along Cherry Valley Road at the entrance to the sod farm (gravel driveway by a pump house). Do not enter the driveway, it is private property. You can park near the road (there is plenty of room by the driveway entrance) and scope the fields. Some of the birds are quite far away. A scope is essential.
By the way, 2 kites were coming and going around the perch at Bloom School, and an immature Broad-winged Hawk was in the neighborhood, which seemed to upset the kites. Whenever the hawk showed itself, the kites started calling. Interesting to hear them vocalize.