Every Thurs., Sept. 3–Oct. 29. WBNA members lead a hike through the Arb to look for fall warblers and other southbound migrants. Birders of all skill levels welcome. 8–11 a.m., meet in the cul-de-sac at the end of Riverview. (off Geddes near the east end of Dow Field). Free. washtenawbna.org.

Sept. 27–Oct. 4. A week of speeches, forums, clothing exchanges, and more. Today’s Earthfest includes hands-on art and gardening activities, free bicycle repairs, and information tables by local sustainability organizations. 10 a.m.–2 p.m., the Diag. Complete calendar at climateweek.umich.edu/calendar.

Oct 1 & 15 (different locations). Talks by visiting scholars.

Oct. 1: “Living Ainu Art: Community, Nature, and Intergenerational Knowledge through Song and Dance.” Lecture-performance of Indigenous Japanese Ainu dance and music by U-M Museum of Art visiting curator Kanako Uzawa.

Oct. 15: “A History of Unowned Dance: Bodies in Transmission.” Dancer & choreographer Yasuko Yokoshi discusses how performing traditional Japanese dance has reshaped her body and artistic practice.

Noon–1:30 p.m., 1010 Weiser Hall, 500 Church St. (Oct. 1) & 4448 East Hall, 530 Church St.(Oct. 15). Free. (734) 764–6307.

Every Thurs. through early Dec. U-M organ majors and faculty perform music TBA on the church’s Richards, Fowkes & Co. organ. 12:15 p.m., St. Andrew’s, 306 N. Division. Free. (734) 663–0518, standrewsaa.org.

Oct. 1 & 29. Talks by visiting scholars.

Oct. 1: Howard University history professor Ademide Adelusi-Adeluyi on “Imagine Lagos: Rethinking the Histories of West African Cities in the 19th Century.”

Oct. 29: Vanderbilt University history professor Samuel Dolbee discusses the history of Turkish fruit orchards in “Ottoman Roots.”

4–6 p.m., 1014 Tisch Hall, 435 S. State. Free. (734) 615–7400.

Every Mon.–Thurs., except Oct. 19 & 20. U-M’s highly disciplined 200+ member marching band or sections thereof can be seen and heard practicing on the new Elbel Field, across the street from the old Elbel Field. All welcome to find a spot in the bleachers and get a sneak preview of upcoming halftime shows. Rehearsals usually last 1–2 hours. Also, at 6 p.m. on Friday, Oct. 16, the band hosts its monthly free Open Stadium Rehearsal at Michigan Stadium. 4:45 p.m., Hill at Fifth Ave. Free. (734) 764–0582.

Oct. 1, 8, 15, & 22 (different times). All invited to work on their own projects using the library’s tools, including silhouette cutting machines, die cutters, embossers, and button makers (Oct. 1); 3D printers, laser engravers, and 3D pens (Oct. 8); sewing machines, silhouette vinyl cutters, and heat presses (Oct. 15); and soldering equipment and electronic components (Oct. 22). 5:30–7:30 p.m. (Oct. 1, 15, & 22) & 11 a.m.–1 p.m. (Oct. 8), AADL Downtown, Secret Lab. Free. (734) 327–4200.

Every Thurs. Runners of all abilities invited to join this eclectic group of runners ranging from people training for their first 5K to ultramarathoners. Sessions are typically interval-based track workouts, followed by socializing at a nearby brewery. 6 p.m., Ferry Field, State at Hoover. May meet elsewhere if the weather is bad. Free. See walline.wixsite.com/bdtc to sign up for email updates on each week’s workout.   

Every Thurs., Sat., & Mon. (different AARC locations). Runners of all abilities invited to join a 5K mapped route (Thurs. & Mon.) or either a beginner or advanced group run (Sat.). AARC Colonnade (6 p.m. Thurs.), 2621 Plymouth Rd.; AARC Traver Village (7 a.m. Sat.), 901 W. Eisenhower; and Corner Brewery (6 p.m. Mon.), 720 Norris, Ypsi. Free. annarborrunningcompany.com.  

Every Thurs. Moderate-paced ride, 25 to 35 miles, along the less-traveled unpaved roads around Chelsea. Bring a chair and a beverage or snack for a postride tailgate. See aabts.org for weather cancellations or delays. 6 p.m. sharp, meet at Aberdeen Bike and Outdoors, 1101 Main, Chelsea. Email [email protected] for each week’s route. Free. (313) 980–5277.   

Every Thurs. All invited to drop in with broken electronics, furniture, toys, or any other item they’d like to try to repair or repurpose with the help and guidance of AHA members. Repairs not guaranteed. 6–8 p.m., basement of 255 E. Liberty, ste. 225. Free; donations welcome. [email protected], meetup.com/allhandsactive/events. 

Every Sun.–Thurs. (different times). All invited to work on their knitting, crochet, weaving, and embroidery projects. 6–8 p.m. (Mon.–Thurs.) & 1–3 p.m. (Sun.), 401 N. Fourth Ave. Free. (734) 780–7867. 

Every Thurs. Bløm staffers lead 2 rounds of trivia. Teams or single players welcome. Prizes. 7 & 8 p.m., 100 S. Fourth Ave. Free, but purchase of food & drink encouraged. (734) 548–9729, drinkblom.com/events.

Every Thurs. All acoustic musicians invited to join members of this local chapter of Comhaltas Ceoltóirí Éireann for an informal evening playing traditional Irish music. Lessons offered. 7–9 p.m., Grace Church main bldg., 3150 Glazier Way. Free. [email protected], detroitirishmusic.org.  

Every Fri. Moderate-paced ride, 20 miles or more, to Dexter and beyond. Pack a lunch or stop in Dexter. See aabts.org for weather cancellations or delays. 10 a.m. sharp, meet at Delhi Metro Park parking lot (left of the tollbooth), E. Delhi off Huron River Dr. Free. [email protected].  

Sept. 27–Oct. 4. A week of speeches, forums, clothing exchanges, and more. Today’s Earthfest includes hands-on art and gardening activities, free bicycle repairs, and information tables by local sustainability organizations. 10 a.m.–2 p.m., the Diag. Complete calendar at climateweek.umich.edu/calendar.

Every Fri., Sat., & Wed. All invited to play one of 200 songs, with melodies transcribed in numbers, on the 17-bell chime’s numbered keys. Ambitious players can add chords. Kids welcome. noon–12:30 p.m. (Fri. & Wed.) & 10:30–11 a.m. (Sat.). Free. [email protected].