These little Sandpipers showed up on our beach on a bleak spring morning, making a quick stop on their way from South America to Canada. Their annual migration is truly amazing: researchers have found that they sometimes fly this route nonstop for six days - that's around 3,000 miles!They only stayed on our beach for a couple of days, but I spent a lot of time with them, trying to capture both their beauty as individuals and the abstract appearance of them as a group.My bird images are all…