The scene is New York's Central Park, but the rich natural history that emerges here - the loons, raccoons, woodpeckers, owls, and hundreds of visiting songbirds - will appeal to wildlife lovers everywhere. At its heart is the saga of the Fifth Avenue hawks, which begins as a love story and develops into a full-fledged mystery. At the outset of our journey we meet the Regulars, a small band of nature lovers who devote themselves to the park and its wildlife. As they watch Pale Male, a remarkable young red-tailed hawk, woo and win his first mate, they are soon transformed into addicted hawk-watchers. From a bench at the park's model-boat pond they observe the hawks building a nest in an astonishing spot - a high ledge of a Fifth Avenue building three floors above Mary Tyler Moore's apartment and across the street from Woody Allen's.