Observer Editor, Free
77th Annual Christmas Bird Count: Washtenaw Audubon Society.
Everyone from novice to experienced birder is invited to take part in the nation’s longest-running ornithological database by volunteering for all or part of the day, either as a field observer or (if you have a bird feeder) as a feeder watcher. The count area is a 15-mile-diameter circle centered on Ann Arbor; its 8 regions must be counted in a single day. This makeshift census may be off by thousands, but much useful information is gained by comparing the results from year to year. Some count regions also conduct predawn searches for owls. The results are tallied at a potluck dinner at U-M Matthaei Botanical Gardens this evening at 5:30 p.m. 12:01 a.m., various locations. Preregistration required at washtenawaudubon.org/christmas-bird-count. Free.