One of the most elaborate, beautiful, and downright bizarre bird behaviors of the spring season comes from a roly-poly shorebird sitting in a wet field, making a sound like that of a truck backing up very slowly. When it bursts into flight, twittering like crazy and rising like a skylark out of sight and hearing, only to return to the precise spot where it began, you're not going to believe your eyes or ears! Join YBC Coordinator Phil Brown as he takes us on a walk in search of this spectacle. Meet outside New Hampshire Audubon's McLane Center on Silk Farm Rd. in Concord at 6:30 p.m.