“IT’S A BIG NIGHT!” Saturday, April 6, 6 to 7 p.m., Ipswich River Wildlife Sanctuary, 87 Perkins Row, Topsfield. Learn about the creatures of vernal pools during a re-creation of a “Big Night” scene in the sanctuary. The “Big Night” is the first warm, rainy night of spring when wood frogs and mole salamanders begin a mass migration to vernal pools where they breed. Program suitable for families with children ages 4 and older. One-hour guided walks along the vernal pool trail will depart every 10 minutes. Refreshments and other treats will be available in the Barn after the walk. Advance registration required. $9/nonmembers, $7/Mass Audubon members. 978-887-9264.
SPRING FAMILY HIKE. Sunday, April 7, 1 to 4 p.m., Forest Street, Middleton. Middleton Stream Team will host its annual Spring Hike to forest vernal pools and other bodies of water. Wear off-trail hiking footwear. Participants are encouraged to bring a light dip net and a small white plastic container to be used for catch and release of any creatures found. Start at Forest Street, located about 0.8 miles up from North Main Street, Route 114, near the entrance to Old Hundred Lane. Park on the south side. Rain date is April 14. Free. middletonstreamteam.org, Streamteam@comcast.net or 978-777-4584.
Music and theater
FACULTY CLASSICAL RECITAL. Thursday, April 4, 7:30 p.m., Recital Hall, Central Campus, Salem State University, 71 Loring Ave., Salem. Salem State’s music faculty will perform works by composers ranging from Mozart to Ravel and SSU’s faculty. $10 suggested donation at the door to benefit the John Finnegan Scholarship Fund for Music Majors. 978-542-7890 or www.salemstate.edu/arts.
“ANNIE GET YOUR GUN.” Thursday, April 4, Friday, April 5, 7:30 p.m.; Saturday, April 6, 2 and 7:30 p.m., Endicott College, Rose Performance Hall, Center for the Arts, 376 Hale St., Beverly. Endicott College’s Mainstage Production presents Irving Berlin’s musical “Annie Get Your Gun.” The family-friendly show features a cast of students, faculty, community members and three children. $15/general, $10/seniors and students of other institutions, free/ECID holders. Tickets and details available at www.endicott.edu/centerforthearts or 978-998-7700.