We went swimming early this afternoon and then I dug in the sand and made a drip castle. After showering, Cathy and I walked on the beach. I was surprised that the castle was still there. The tide hadn’t come in yet but no one had stepped on it. On our walk we saw a few common grackles (Quiscalus quiscula) just above the surf pulling up clams after each wave. It’s not really surprising that they’ve learned to enjoy clams. It’s just that we don’t think of grackles as shore birds, skipping around at the top of the surf along with willets and sand pipers.