Monty and Rose met last year on a beach on the north side of Chicago. Their attraction was intense, immediate, and you might say, fruitful. Somewhere between the roll of lake waves and the shimmer of skyscrapers overlooking the beach, Monty and Rose fledged two chicks. They protected their offspring through formative times. But then, in fulfillment of nature's plan, they parted ways, and left the chicks to make their own ways in the world. Monty and Rose are piping plovers, an endangered species of bird of which there may only be 6,000 or 7,000 in the world, including Monty, Rose and their chicks. They were the first piping plovers to nest in Chicago in more than 60 years. After their chicks fledged, they drifted apart. Rose went off to Florida for the winter, and Monty made his way to the Texas coast. They'd always have the North Side, but were each on their own in a huge, fraught world. And then, just a few days ago, Monty and Rose were sighted again, on the same patch of sand on