Every Mon. All invited to join club member James Weir on a leisurely stroll through the well-maintained dirt paths of the Botanical Gardens to observe migrating warblers, thrushes, flycatchers, cuckoos, and other birds making their way south. Binoculars provided if needed. 5:30–7:30 p.m., 1800 N. Dixboro Rd. Free. washtenawbna.org.