Dick Weeman Memorial Scholarship Gun Bash, 2 p.m. to 5 p.m. today, Elks Club, Waterville. Sponsored by the Maine chapter, National Wild Turkey Federation. Raffles, games and silent auction to raise money for scholarships for students pursuing outdoors professions. FMI: Call Chris Weeks at 465-2112 or 692-3300.

Family walk at Freeport Conservation Trust’s Calderwood preserve, today, 2-4 p.m. Walk leader Jay Espy is a Freeport resident with a long career working to preserve Maine’s special places, a keen interest in the natural world and many hours spent in the woods with his kids. Walk involves a 1-mile, flat terrain loop on the inland side of the road and a half-mile loop along the shore of Maquoit Bay. Directions: From the L.L. Bean retail store, follow Bow Street/Flying Point Road toward Brunswick for just over 5 miles. FMI: Email [email protected] or call 869-1012.

Navigating Midcoast Maine, 6-8 p.m. Monday, Wednesday, Oct. 31 and Nov. 2, class offered by the Coast Guard Auxiliary Flotilla at the Wiscasset EMA Center. The Three Rivers chart (#13293) and a copy of a chapter on navigation principles are included. A parallel ruler and dividers are needed and can be purchased separately. FMI or to register, contact David Eastwood at 633-4748 or email [email protected] 

Owl Prowl, 7 p.m. Wednesday, Wells Reserve at Laudholm. See how researchers band owls, then awaken your senses by walking the trails after dark, calling for owls and discovering your own night adaptations. For ages 8 and up. $7/$5. Reservations required. Call 646-1555 or go to wellsreserve.org

Sebago to the Sea Trail Designation Ceremony, 10 a.m. Saturday. Event celebrating the opening of another 13 miles of the Sebago to the Sea Trail will take place off Forest Avenue/Route 302 across from Portland’s historic Riverton Trolley Park. Park at Waste Management of Maine at 2000 Forest Avenue, Portland. Once complete, the Sebago to the Sea Trail will enhance a variety of natural and recreational resources and will link the city of Portland to the shores of Sebago Lake. FMI: Visit www.sebagotothesea.org.

Halloween Star Party, 6:30 p.m. Saturday at the Brunswick-Topsham Land Trust’s Crystal Spring Farm, 277 Pleasant Hill Road, Brunswick. Event is free. Come in costume and enjoy a guided tour of myriad celestial wonders through quality telescopes. FMI: Visit www.southernmaineastronomers.org or call 949-2089.

“Staring at the Stars” with astronomer Don Dilworth, Friday, from 7-8:30 p.m. at Zak Preserve. FMI or to sign up: Contact the Boothbay Region Land Trust office at 633-4818 or [email protected]

Looking Ahead

“Race Thru the Woods,” Hidden Valley Nature Center in Jefferson, 9 a.m. on Oct. 30. Explore single and double-track trails over rolling terrain in this challenging half-marathon race. Enjoy hot food around the fire pit after the race. Registration fee is $25. Race is capped at 50, so register early, at www.hvnc.org. FMI: Call Gary at 586-6752 or email [email protected]

Citizen Science for Monitoring Marine Invasive Species. Join Adrienne Pappal, Massachusetts Office of Coastal Zone Management, Nov. 3 at noon as she describes some unwelcome guests in our nearshore waters, what their potential impacts may be and what is being done to manage them. Pappal will share information from the Marine Invader Monitoring and Information Collaborative, a citizen science collaborative for detecting and monitoring marine invasive species. Bring a lunch and your curiosity. $2 suggested donation. Wells Reserve at Laudholm. FMI: Call 646-1555 or visit wellsreserve.org.

Birding Field Trip, Nov. 13, 7:30-11:30 a.m. Join expert birder Derek Lovitch for the annual Rarity Roundup in southern York County. Come join the fun in finding the last of this seasons migrants. Meet at the I-95 Kennebunk southbound rest area in the main car parking area. FMI: Call Pat Moynahan at 284-5487. 

A Maine Conservation Corps field team crew will be working in Portland in November on an assortment of projects on the Sebago to Sea Trail and needs your help. All safety equipment and tools are provided. Available volunteer dates are Nov. 2 and 8. FMI: Contact Sarah Gaffney at 624-6092 or [email protected] 

Christmas Wreath Workshop at Beaver Park in Lisbon, Nov. 19 from 9 a.m. -noon and 1-4 p.m. and Nov. 20 from 1-4 p.m. Additional workshops Nov. 26 from 9 a.m.-noon and 1-4 p.m. and Nov. 27 from 1-4 p.m. $12 charge per wreath. FMI or to register: Call Verla Brooks at Beaver Park at 353-9075.

Ongoing

The South Portland Land Trust has released its first trail map and guide. The map is available for $4.95 at Nonesuch Books and South Portland City Hall. The trust is also providing copies to South Portland libraries and schools. FMI: Visit www.southportlandlandtrust.org.

Nature programs, 2 p.m. today, Saturday and Oct. 30, Wolfe’s Neck Woods State Park, Freeport. Free with park admission of $1 for ages 5 to 11, $3 for Maine residents 12 to 64, $4.50 for nonresidents, $1.50 for non-residents over 65, free for kids under 5 and Maine residents 65 or over; meet at the benches by the second parking lot, weather permitting. FMI: Call 865-4465.

Little Lake Stewards Story Time, 10 a.m. to noon Nov. 18, Dec. 16, Jan. 20, Feb. 17, March 16 and April 14, at the Portland Water District’s Sebago Lake Ecology Center, 1 White Rock Road, Standish. Environmentally themed stories, activities and crafts for preschoolers. Please preregister by calling 774-5961, ext. 3319 or 3320 or emailing [email protected] $10 donation for entire series or $2 per session.

Guided trail walks at Inland Woods/Pine Ridge trails in Waterville. 8 a.m. Mondays through October. Free. Meet at trailhead behind Inland Hospital, 200 Kennedy Memorial Drive. FMI: www.kmtrails.org or 861-3292.

Weekly Bird Walk, 7 a.m. Thursdays at Gilsland Farm, off Route 1, Falmouth; $5 for Maine Audubon members, $8 for nonmembers. Bring binoculars and a field guide and meet in the visitor center parking lot. FMI: Call 781-2330, ext. 209.

Casco Bay Bicycle Club hosts several weekly road bike rides and special one-time rides. Members and nonmembers are welcome. FMI: Visit www.cascobaybicycleclub.org.