Barbara and I had a couple of Tree Swallows over our driveway this afternoon. I saw 22 Hooded Mergansers and a few Common Mergansers at Rock Cut. Also today at Rock Cut: a Pied-billed Grebe, Canvasbacks and both scaup species, Buffleheads, Redheads and Black Ducks. Ruddy Ducks on the Rock River by Auburn St. Bridge. Yesterday 8 Tundra Swans on the Rock River between Byron and Oregon, 14 White-fronted Geese at Rock Falls and lots of Ducks up and down the river.