Battle of the Badges Basketball Tournament, March 28, 6 p.m., Fairfield Warde High School, 755 Melville Ave., Fairfield. Fairfield Fire Department vs. Fairfield Police. Bridgeport Police vs Bridgeport Fire Dept. Tickets: $5. Barnum Festival fund-raiser. Info: barnumfestival.com.
Woodcock & Spring Peeper Walk, March 29, 6:45-8:45 p.m., Audubon Greenwich, 613 Riversville Rd., Greenwich. Ages 6 and up. Rain date March 30. Cost $5-$8. RSVP: email@example.com. Info: greenwich.audubon.org.