Editor’s Note: Listings in Trail Mix are free. Email: outdoor@recorder.com. The deadline is Thursday by noon. Questions? Call 413-772-0261, ext. 276. Weather may cancel or force the rescheduling of some of these events.

Great Falls Discovery Center

Kidleidoscope Fridays: 10:30 to 11:30 a.m. on Fridays. Come each week to learn about our wildlife neighbors who share our home in the Connecticut River Watershed. Kidleidoscope is a free child-friendly, hands-on environmental experience for young children. Each topic includes a story, interactive activities and a craft to introduce you and your child to the natural world. For ages 3 to 6. For more information, call 413-863-3221.

Bike Path BINGO: Saturday, May 25, 10:30 to 11:30 a.m. All ages are welcome to practice examining the natural world with field guides, binoculars and a fun game to see just how much you can see. Meet at the center’s main entrance. Bring water, bug spray and sunscreen, and wear sturdy shoes. Free.

14th Annual Free Family Fishing Day: Saturday, June 1, 10 a.m. to 2 p.m. at three locations:

■Barton Cove Campground — Barton Cove Road in Gill

Free fishing, with equipment provided. Limited supplies available; bring your own pole if you have it. No fishing license needed.

■Great Falls Discovery Center — 2 Avenue A in Turners Falls

Fly lure tying demonstrations, fly fishing casting demonstrations and fish viewing from the Silvio Conte Anadromous Fish Lab.

Turners Falls Fishway — 15 First St. in Turners Falls

Fish printing (the art of Gyotaku) from noon to 2 p.m.

Children must be accompanied by an adult. Event is held rain or shine. Parking is free at each site, or opt to ride the free Fish Bus shuttle between sites.

Northfield Mountain

“Migrating Fish, Mills and More”: Saturday, May 18, 10 to 11:30 a.m. Join staff from the Turners Falls Fishway for a free guided walk along the popular canalside trail and bike path. Learn about the amazing journeys of migratory fish as they travel upriver during their spring spawning run. Discover the history of the mills along the canal when Turners Falls was a paper and cutlery powerhouse. Meet at the picnic tables next to the entrance of the Turners Falls Fishway (15 1st St. in Turners Falls). Total length of the walk is less than 1 mile along flat terrain. All ages are welcome. Heavy rain cancels. No registration required.

Massachusetts Forest Alliance

Young Forest Bird Walk in Ashfield: Thursdays, May 16, May 30 and June 13, all from 7:30 to 9:30 a.m. Participants should wear long pants, long sleeves and boots suitable for wet conditions. Participants are encouraged to treat their clothing against ticks and bring bug spray. Because the re-growing forest has many stumps and abundant slash, a sturdy walking stick may be helpful. These walks will be cancelled in event of heavy rain. Participants should meet at the Taylor Forest entrance by the hydrant on Hawley Road just east of Old Stage Road. Park only along the north side of Hawley Road. For more information, see the Massachusetts Forest Alliance website at massforestalliance.net or call Gregory Cox at 413-475-2883.

Mount Grace Land Conservation Trust

Volunteer Appreciation Picnic: Saturday, May 18, 11 a.m. to noon at the AMC Richardson-Zlogar Cabin at the end of Alexander Hill Road in Northfield. Food will be provided, but feel free to bring a side to share. Lunch will be preceded by a guided hike with Sam Richardson at 10 a.m. Register with KimLynn Nguyen by email at nguyen@mountgrace.org or by calling 978-248-2055, ext. 14.

Veteran Excursion: Saturday, May 25, 10 a.m. to 1 p.m. at Alderbrook Meadows Wildlife Sanctuary, 835 Millers Falls Road (Route 63) in Northfield. Mount Grace is encouraging people with mobility challenges, veterans, families and community members to be part of recognizing this special property, its accessibility and the veterans who have served our country in recognition of Memorial Day. There will be a demonstration of the Freedom Chair initiative by the North Quabbin Trail Association, a guided nature tour, an address by the chairman of the Veterans of Foreign Wars Northfield Post, a moment of silence and a flag ceremony. Refreshments and lunch will be provided after the walk. Volunteers are also needed to help set up and clean up. Contact Cami by email at duquet@mountgrace.org or by phone at 978-248-2055, ext. 13 for more information.

Great American Campout: Saturday, June 15, at 1 p.m. through Sunday, June 16, at 10 a.m. at Dexter Park Innovation School, 3 Dexter St. in Orange. A host of fun outdoor activities for both novice and experienced campers. Refreshments, Saturday dinner and Sunday breakfast will be provided. Volunteers are also needed to help families set up tents, run games, prep food, oversee fire-pits, tell campfire stories and more. Contact Jessica by email at outreach_americorps@mountgrace.org or by phone at 978-248-2055, ext. 21 for more information.

Hitchcock Center for the Environment

May Migration Spring Birding Course: May 18, 7 a.m. to noon. Join Dan Ziomek of WRSI’s “Bird Songs” in a variety of local habitats during peak birding migration. $90 to $115. Space is limited. Register at bit.ly/2Ovdp1S.

Second Saturday Family Science Series: 10 to 11 a.m. on the second Saturday of each month. Designed for children with their parents, these programs will explore cool topics in nature. Free, but registration is encouraged at bit.ly/2zof6XW. Groups of six or more should call ahead at 413-256-6006.

Homeschool Discovery Days: 10 a.m. to 2 p.m. on one Tuesday each month. Explore science and nature topics with Katie Koerten and Jeff Mazur, meet science experts and sometimes go on field trips. Upcoming topics include life in a pond on June 11. Designed as a drop-off program for children ages 6 to 12. Limited to 12 participants per program. $45 to $55. Register at bit.ly/2ECwLQF.