Tenbucksixer concert: 6 p.m., Bootstrap Brewing Company, 142 Pratt St., Longmont. Tenbucksixer is an original band with folk-rock songs that can take listeners by surprise, with lyrics and tunes that are sometimes whimsical, sometimes serious but always witty, poetic and insightful. 720-438-8488, bootstrapbrewing.com.

Bluegrass Ensemble performances: 5 p.m., Altona Grange Hall, 9386 N. 39th St., Longmont. Enjoy bluegrass ensemble performances with a brief intermission. Snacks and light refreshments will be provided. Free, 303-444-7444, facebook.com.

“Closer Than Ever” performance: 7:30 p.m., The Longmont Theatre Company, 513 Main St., Longmont. “Closer Than Ever” is a musical revue — a collection of songs, rather than a traditional plot, exploring the themes of love, relationships and life’s journey through various characters. The show is characterized by its lack of a traditional narrative with the songs serving as individual stories. $30-$35, 303-772-5200, longmonttheatre.org.

Erie Town Fair: 6 a.m. Saturday, Historic Downtown Erie/Coal Creek Park, 235 Wells St., Erie. Experience the charm of Historic Downtown Erie at the 28th annual Erie Town Fair. Enjoy a day filled with art, crafts, vendors, children’s activities and delicious food. Free, 303-828-3440, members.eriechamber.org.

World Migratory Bird Day: 9 a.m. Saturday, Walden Ponds Wildlife Habitat, 3893 N. 75th St., Boulder. The “Creating Bird-Friendly Cities and Communities” campaign highlights the need for a healthy coexistence between humans and birds. It will focus on creating and adapting environments that support migratory bird populations across all communities. There are actions everyone can take to protect shared spaces with wildlife. Free, boco.org.

Harvesting Home season opener: 10 a.m. Saturday, Jack’s Solar Garden, 8102 N. 95th St., Longmont. Join the Colorado Agrivoltaic Learning Center for an inspiring day at Jack’s Solar Garden to learn about tangible action to support Boulder County’s local food system, local and state policy initiatives and the renewable energy transition. Come meet the local farms and producers that are Boulder County’s food system, and learn how to get involved with these organizations through volunteer days, purchasing CSA shares or supporting local farm stands. $5, coagrivoltaic .org.

Nature With Neighbors: 10 a.m. Sunday, Thomas Reservoir, N. 119th St., Erie. oin Erie Rotary Club for its Nature with Neighbors planting event. Participants will be restoring and enhancing public spaces around Thomas Reservoir by planting pollinator species and native Colorado plants. All tools and supplies will be provided. Free, zeffy.com.

Strawberry Festival Vintage & Antique Market: 11 a.m. Sunday, Boulder County Fairgrounds, 9595 Nelson Road, Longmont. Shop vintage, antiques, collectibles and art from Colorado and beyond. A must-visit for collectors, history buffs and treasure hunters alike. $10-$11, 303-776-1870, stvrainhistory.org.

“Resonance — Beings of Frequency” film screening: 2 p.m. Sunday, Longmont Library, 409 Fourth Ave., Longmont. Longmont hosts a free screening of “Resonance — Beings of Frequency,” a 2013 documentary on EMF’s impact on all life. Recent reports show a 75% loss in U.S. honeybees; Swedish EMF expert Olle Johannson joins via Zoom to shine a light on this devastating predicament. Free, longmont4safetech.org.

Liberty Quartet concert: 6 p.m. Sunday, Bible Baptist Church Of Erie, 5050 NE County Line Road, Unit 1, Erie. Liberty Quartet was founded in October of 1995 out of a local church in Boise, Idaho. Royce Mitchell was the choir director and the other three members were in the choir. In 1997, Liberty began traveling full-time. Liberty is celebrating God’s faithfulness and over two decades of ministry. bandsintown.com.

Erie Early Literacy Fair: 9:30 a.m. Monday, Erie Community Library, 400 Powers St., Erie. Read, write, sing, talk and play with your child. Drop in to check out the Erie Early Literacy Fair: Book Besties for lots of fun learning activities based on the five practices of Every Child Ready to Read. Participants and their children will enjoy games, fun crafts, learning activities and more. Free, highplains.libcal.com.

Hiking the Colorado X: 6 p.m. Monday, City Council Chambers at the Civic Center, 350 Kimbark St., Longmont. Join India H. Wood for an engaging presentation of wild stories and photography documenting her unique backpacking adventures across Colorado. Wood solo hiked a 1,500-mile “X” across Colorado, an adventure coined the “Diagonal,” consisting of unique routes from the SE to NW state corners in 2020 and NE to SW in 2022. Wood will talk about her trek, share photos and share her observations of the state as a square sample of the planet. Free, 303-651-8470, longmontcolorado.gov.

Editor’s note: Availability and scheduling of events may be subject to change.