Birches Path work day, 9 a.m. to noon today. Work will involve cutting saplings and small trees. There may be some earth work. Please bring loppers, small saw and/or spade. Meet at the Great Pond Mountain Wildlands South Gate on Route 1 at 9 a.m. For more info: contact Scott at 825-4709 or [email protected]

Nature program, 2 p.m. today, 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 nonresidents 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.

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

“Sled Dog Trails,” presentation by dog-sledder Polly Mahoney, accompanied by several of her team dogs, Maine Outdoor Adventure Club monthly program, 7 p.m. Wednesday, Allen Avenue Unitarian Universalist Church,Portland.

Citizen Science for Monitoring Marine Invasive Species. Join Adrienne Pappal, Massachusetts Office of Coastal Zone Management, at noon Thursday as she describes some unwelcome guests in our near-shore 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

Annual bird seed fundraiser, with proceeds benefiting the education programs of The Wells Reserve at Laudholm and York County Audubon. Pick up a bird seed order form at the Wells Reserve visitor center, call 646-1555 to have one mailed or download it at wellsreserve.org. Orders placed before Friday get the greatest discount. 

The impact of mountaintop removal for coal extraction will be the topic of a talk and slide show, 4:10 p.m. Tuesday in McCormick Lecture Hall at College of the Atlantic in Bar Harbor. The presentation is part of the Human Ecology Forum.

Looking Ahead

Conservation and Sportsmen’s Banquet, Nov. 19 at Jeff’s Catering, 15 N. Littlefield Way, Brewer. Fundraiser by the Central Maine Chapter of the Ruffed Grouse Society. Auctions, drawings and door prizes. Proceeds to be used to restore and protect grouse and woodcock habitat. For more information and/or tickets, contact Gray at 863-5069.

Holiday Home Nature Crafts, 2 to 4 p.m. Nov. 6, bring the colors and smells of the holidays into your home with three simple nature crafts. Learn how to fashion a fragrant wreath, a winterberry candle and a festive centerpiece. Materials and instruction will be provided. All ages welcome. $12/$10. Registration required. Wells Reserve at Laudholm, 646-1555, wellsreserve.org

“Mosses and Their Relatives,” workshop, 9 a.m. to 1 p.m. Nov. 11 at the University of Maine Hutchinson Center in Belfast. Cost is $45. Register by calling 338-8000, or go to www.hutchinsoncenter.umaine.edu. Partial scholarships available; call the Science Program Office at 338-8038. 

Maine Fly Fishing Show, 9 a.m. to 5 p.m. Nov. 6, at the Maine Military Museum, 50 Peary Terrace, South Portland, just off Broadway near Cash Corner. Cost is $5 for adults and $3 for children. Benefits Maine Trout Unlimited’s Trout Camp for youth age 13 to 17. FMI: http://tumaine.org/mffs.htm

Spawning Spectacular 2011, noon to 3 p.m. Nov. 13 at Craig Brook National Fish Hatchery in East Orland. Atlantic salmon spawning demonstrations at 12:30, 1:30 and 2:30. Admission is free. FMI: Call the hatchery at 469-6701, ext. 215. 

Master Maine Guide Jim Witherell speaks about his new book, “L.L. Bean: The Man and His Company,” from noon to 1 p.m. Nov. 9 at the Portland Public Library’s Brown Bag Lecture Series. 

The future of Maine’s North Woods will be explored in a public forum at 7 p.m. Nov. 7 in Heritage Hall at the Franco American Heritage Center (46 Cedar St.) in Lewiston. The event is being co-sponsored by the Androscoggin Land Trust, Stanton Bird Club and Harward Center for Community Partnerships at Bates College. This free, public program will include presenters from the Maine Snowmobile Association; the Natural Resources Council of Maine; the Maine Forest Products Council; and the Appalachian Mountain Club.

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.south portlandlandtrust.org

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. Preregister by calling 774-5961, ext. 3319 or 3320 or emailing [email protected] $10 donation for entire series or $2 per session. 

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 rides. Members and nonmembers welcome. Weekly and one-time rides for all levels. FMI: visit www.cascobaybicycleclub.org.