IU ornithology professors Jim and Susan Hengeveld will be leading a bird walk at Stillwater Marsh. The warblers are already singing and this is an exciting opportunity to spot early spring migrants with two of Indiana's top birders. Masks and pre-registration at president@sassafrasaudubon.org are required. Limit of 15 people; binoculars provided if you need them. Meet at Stillwater viewing platform at 8 a.m. If you need guidance to Stillwater, meet at 7:30 to caravan from the northeast corner of the old Kmart parking lot in Bloomington (just across from the parking lot at Bloomingfoods East).